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John  Dunn    Research Leader /ARSUserFiles/60401040/images/DSC_0005 copy 3.jpg   ARS News ArticlesitemAnalyzing Genomes to Improve Disease Control in Poultry  ProjectsInfluence of Vaccines, Host Genetics and Pathogen Mutation Rates on the Evolutionary Dynamics of Infectious Diseases - PurdueCooperative Agreement (A)Accession Number:439583Genomic and Epidemiological Parameters to Inform Interventions Strategies for Enteric Diseases of PoultryIn-House Appropriated (D)Accession Number:439671Elucidation of Molecular Determinants of Avian Herpesviruses Virulence and Evolution to Inform the Development of Safe and Effective VaccinesIn-House Appropriated (D)Accession Number:441124Systems Biology Approaches to Develop Medical Countermeasures to Detect, Prevent, and Control Poultry Production Viral DiseasesIn-House Appropriated (D)Accession Number:441471Enhancing Genetic Resistance and Vaccinal Response to Control Marek's Disease, Infectious Laryngotracheitis, and Infectious Bursal Disease in ChickenIn-House Appropriated (D)Accession Number:443180Enhancing the production of type I interferons to create rationally-defined and highly protective Marek's diseas vaccines in chickensInteragency Reimbursable Agreement (I)Accession Number:436699US-UK Collaboration: Genetic and Non-Genetic Drivers for Virus Transmission and Virulence EvolutionInteragency Reimbursable Agreement (I)Accession Number:439476Influence of Vaccines, Host Genetics, and Pathogen Mutation Rates on the Evolutionary Dynamics of Infectious Diseases - BerlinNon-Assistance Cooperative Agreement (S)Accession Number:439572Prevention of Immunosuppressive Viruses of PoultryNon-Assistance Cooperative Agreement (S)Accession Number:438728Genomic and Epidemiological Parameters to Inform Interventions Strategies for Enteric Diseases of PoultryNon-Assistance Cooperative Agreement (S)Accession Number:442078Elucidate Host-Pathogen Interactions of Polymicrobial Infections in Broiler Chicken ProductionNon-Assistance Cooperative Agreement (S)Accession Number:444438Develop Novel Vaccines Against Avian Reovirus and to Elucidate Mechanisms of Viral PathogenesisNon-Assistance Cooperative Agreement (S)Accession Number:444938  Publications(Clicking on the reprint iconReprint Icon  will take you to the publication reprint.)Phenotypic characterization of recombinant Marek’s disease virus in live birds validates polymorphisms associated with virulence-(Peer Reviewed Journal) Kim, T.N., Hearn, C.J., Mays, J.K., Velez-Irizarry, D., Reddy, S.M., Spatz, S.J., Cheng, H.H., Dunn, J.R. 2023. Phenotypic characterization of recombinant Marek’s disease virus in live birds validates polymorphisms associated with virulence. Viruses. 15(11):2263. https://doi.org/10.3390/v15112263.Newcastle disease virus (NDV) recombinant expressing Marek’s disease virus (MDV) glycoprotein B protects chickens against MDV and NDV challenges-(Peer Reviewed Journal) He, L., Spatz, S.J., Dunn, J.R., Yu, Q. 2023. Newcastle disease virus (NDV) recombinant expressing Marek’s disease virus (MDV) glycoprotein B protects chickens against MDV and NDV challenges. Vaccine. 41(40):5884-5891. https://doi.org/10.1016/j.vaccine.2023.08.038.Molecular characterization and phylogenetic analysis of Marek's disease virus in chickens from Ogun State, Nigeria-(Peer Reviewed Journal) Oluwayinka, E.B., Otesile, E.B., Oni, O.O., Ajayi, O.L., Dunn, J.R. 2023. Molecular characterization and phylogenetic analysis of Marek's disease virus in chickens from Ogun State, Nigeria. Avian Pathology. 52(6):401-411. https://doi.org/10.1080/03079457.2023.2243838.Virulence determination of Marek's disease virus that changed multiple nucleotides in virulence-related open reading frames.-(Proceedings)Targeted ablation of exon 2 of the Avian Leukosis Virus-A (ALV-A)receptor gene in a chicken fibroblast cell line by CRISPR abrogates ALV-A infection-(Peer Reviewed Journal) Conrad, S.J., Mays, J.K., Hearn, C.J., Dunn, J.R. 2023. Targeted ablation of exon 2 of the Avian Leukosis Virus-A (ALV-A)receptor gene in a chicken fibroblast cell line by CRISPR abrogates ALV-A infection. Avian Diseases. 67(1):102-107. https://doi.org/10.1637/aviandiseases-D-22-00072.Evaluation of Newcastle disease virus LaSota strain attenuated by codon pair deoptimization of the HN and F genes for in ovo vaccination-(Peer Reviewed Journal) Eldemery, F., Ou, C., Kim, T.N., Spatz, S.J., Dunn, J.R., Silva, R.F., Yu, Q. 2022. Evaluation of Newcastle disease virus LaSota strain attenuated by codon pair deoptimization of the HN and F genes for in ovo vaccination. Veterinary Microbiology. 277:109625. https://doi.org/10.1016/j.vetmic.2022.109625.Detection of Avian Neoplastic Disease viruses in formalin-fixed neoplastic livers of layers from farms in Kaduna and Plateau States, Nigeria-(Peer Reviewed Journal) Sani, N., Abalaka, S., Ugochukwu, C., Saleh, A., Muhammad, S., Oladele, S., Abdu, P., Njoku, C., Dunn, J.R. 2022. Detection of Avian Neoplastic Disease viruses in formalin-fixed neoplastic livers of layers from farms in Kaduna and Plateau States, Nigeria. Comparative Clinical Pathology. https://doi.org/10.1007/s00580-022-03373-x.Multicentric T-cell lymphoma in a domestic turkey-(Peer Reviewed Journal)Identification and validation of Ikaros (IKZF1) as a cancer driver gene for Marek’s disease virus-induced lymphomas-(Peer Reviewed Journal) Steep, A., Hildebrandt, E.C., Xu, H., Hearn, C.J., Frishman, D., Niikura, M., Dunn, J.R., Kim, T.N., Conrad, S.J., Muir, W.M., Cheng, H.H. 2022. Identification and validation of Ikaros (IKZF1) as a cancer driver gene for Marek’s disease virus-induced lymphomas. Microorganisms. 10(2):401. https://doi.org/10.3390/microorganisms10020401.Deletion of the viral thymidine kinase in a meq-deleted recombinant Marek's disease virus reduces lymphoid atrophy but is less protective-(Peer Reviewed Journal) Conrad, S.J., Oluwayinka, E.B., Mays, J.K., Heidari, M., Dunn, J.R. 2021. Deletion of the viral thymidine kinase in a meq-deleted recombinant Marek's disease virus reduces lymphoid atrophy but is less protective. Microorganisms. 10(1):7. https://doi.org/10.3390/microorganisms10010007.Evaluation of host genetic resistance to infectious bursal disease virus-(Abstract Only)Differential diagnosis of lymphoid and myeloid tumors in the chicken (slide set and text)-(Other) Dunn, J.R., Gimeno, I.M., Wakenell, P., Sato, Y. 2021. Differential diagnosis of lymphoid and myeloid tumors in the chicken (slide set and text). American Association of Avian Pathologists. 2nd edition.Review of poultry recombinant vector vaccines-(Peer Reviewed Journal) Hein, R., Koopman, R., Garcia, M., Armour, N., Dunn, J.R., Barbosa, T., Martinez, A. 2021. Review of poultry recombinant vector vaccines. Avian Diseases. 65(3):438–452. https://doi.org/10.1637/0005-2086-65.3.438.Comparison of Marek's disease virus challenge strains and bird types for vaccine licensing-(Peer Reviewed Journal) Dunn, J.R., Mays, J.K., Hearn, C.J., Hartman, A. 2021. Comparison of Marek's disease virus challenge strains and bird types for vaccine licensing. Avian Diseases. 65(2):241-249. https://doi.org/10.1637/aviandiseases-D-20-00122.Deletion of thymidine kinase reduces protection of Marek’s disease vaccine candidate-(Abstract Only) Dunn, J.R., Conrad, S.J., Oluwayinka, E., Mays, J.K., Heidari, M. 2021. Deletion of thymidine kinase reduces protection of Marek’s disease vaccine candidate. American Association of Avian Pathologists. Deletion of thymidine kinase reduces protection of Marek's disease vaccine candidate [abstract].Depletion of CD8aß+ T cells in chickens demonstrates their involvement in protective immunity towards Marek’s disease with respect to tumor incidence and vaccinal protection-(Peer Reviewed Journal) Umthong, S., Dunn, J.R., Cheng, H.H. 2020. Depletion of CD8aß+ T cells in chickens demonstrates their involvement in protective immunity towards Marek’s disease with respect to tumor incidence and vaccinal protection. Vaccines. 8(4):557. https://doi.org/10.3390/vaccines8040557.Attenuation of NDV LaSota strain by codon pair deoptimization of the HN and F genes is not sufficient for in ovo vaccination-(Abstract Only)Two cases of Marek's disease in backyard turkeys-(Peer Reviewed Journal) Hauck, R., Mays, J.K., Dunn, J.R., Shivaprasad, H.L. 2020. Two cases of Marek's disease in backyard turkeys. Avian Diseases. 64(3):347-351. https://doi.org/10.1637/aviandiseases-D-19-00177.The Secretion of Type I Interferons as a Primary Determinant of Susceptibility to Marek’s Disease Virus in Chickens-(Abstract Only)Vaccinal efficacy of molecularly cloned Gallid alphaherpesvirus 3 strain 301B/1 against very virulent Marek’s disease virus challenge-(Peer Reviewed Journal) Kim, T.N., Spatz, S.J., Dunn, J.R. 2020. Vaccinal efficacy of molecularly cloned Gallid alphaherpesvirus 3 strain 301B/1 against very virulent Marek’s disease virus challenge. Journal of General Virology. 101(5):542-552. https://doi.org/10.1099/jgv.0.001403.Pathogen transmission from vaccinated hosts can cause dose-dependent reduction in virulence-(Peer Reviewed Journal) Bailey, R.I., Cheng, H.H., Chase-Topping, M., Mays, J.K., Anacleto, O., Dunn, J.R., Doeschl-Wilson, A. 2020. Pathogen transmission from vaccinated hosts can cause dose-dependent reduction in virulence. PLoS Biology. 18(3):e3000619. https://doi.org/10.1371/journal.pbio.3000619.The role of host genetic resistance on Marek’s disease virus transmission-(Abstract Only)Codon deoptimization of UL54 in meq-deleted Marek's disease vaccine candidate eliminates lymphoid atrophy but reduces vaccinal protection-(Peer Reviewed Journal) Conrad, S.J., Hearn, C.J., Silva, R.F., Dunn, J.R. 2020. Codon deoptimization of UL54 in meq-deleted Marek's disease vaccine candidate eliminates lymphoid atrophy but reduces vaccinal protection. Avian Diseases. 64(3):243-246. https://doi.org/10.1637/aviandiseases-D-19-00166.Codon pair deoptimization of the HN and F of NDV LaSota strain does not significantly attenuate the virus for in ovo vaccination-(Abstract Only) Eldemery, F., Ou, C., Kim, T.N., Spatz, S.J., Dunn, J.R., Silva, R.F., Yu, Q. 2020. Codon pair deoptimization of the HN and F of NDV LaSota strain does not significantly attenuate the virus for in ovo vaccination. Proceedings of Southern Conference on Avian Diseases. In: ABSTRACTS of 2020 International Poultry Scientific Forum, p73. Atlanta, GA, 28-30 January 2020.Towards a mechanistic understanding of the synergistic response induced by bivalent Marek’s disease vaccines to prevent lymphomas-(Peer Reviewed Journal) Umthong, S., Dunn, J.R., Cheng, H.H. 2019. Towards a mechanistic understanding of the synergistic response induced by bivalent Marek’s disease vaccines to prevent lymphomas. Vaccine. 37(43):6397-6404. https://doi.org/10.1016/j.vaccine.2019.09.003.Vaccinal efficacy of Gallid alphaherpesvirus 3 strain 301B/1 from BAC clone against Marek’s disease virus challenge-(Abstract Only) Kim, T.N., Dunn, J.R., Spatz, S.J. 2019. Vaccinal efficacy of Gallid alphaherpesvirus 3 strain 301B/1 from BAC clone against Marek’s disease virus challenge [abstract]. American Association of Avian Pathologists Annual Meeting, Washington D.C., August 2-6, 2019.Identification of Marek’s disease virus genes associated with virulence of US strains-(Peer Reviewed Journal) Dunn, J.R., Black Pyrkosz, A., Steep, A., Cheng, H.H. 2019. Identification of Marek’s disease virus genes associated with virulence of US strains. Journal of General Virology. 100(7):1132-1139. https://doi.org/10.1099/jgv.0.001288.Evaluation of protective efficacy when combining HVT vector vaccines-(Peer Reviewed Journal) Dunn, J.R., Dimitrov, K.M., Miller, P.J., Garcia, M., Turner-Alston, K., Brown, A., Hartman, A. 2018. Evaluation of protective efficacy when combining HVT vector vaccines. Avian Diseases. 63(1):75-83. https://doi.org/10.1637/11979-092818-Reg.1.Research Update: Avian Disease & Oncology Lab and Endemic Poultry Viral Diseases Unit-(Proceedings) Dunn, J.R., Cheng, H., Heidari, M., Zhang, H., Kim, T.N., Spatz, S.J., Yu, Q. 2018. Research Update: Avian Disease & Oncology Lab and Endemic Poultry Viral Diseases Unit. Proceedings of the United States Animal Health Association Annual Meeting, October 18-24, 2018.Protective efficacy of molecularly cloned Gallid alphaherpesvirus 3 vaccine strain 301B/1 against very virulent Marek’s disease virus challenge-(Abstract Only) Kim, T.N., Dunn, J.R., Spatz, S.J. 2018. Protective efficacy of molecularly cloned Gallid alphaherpesvirus 3 vaccine strain 301B/1 against very virulent Marek’s disease virus challenge [abstract]. Annual International Herpesvirus Workshop, Vancouver, Canada, July 21-25, 2018.Attenuation of Marek’s disease virus by codon pair deoptimization of core herpesvirus genes-(Peer Reviewed Journal) Conrad, S.J., Silva, R.F., Hearn, C.J., Climans, M., Dunn, J.R. 2018. Attenuation of Marek’s disease virus by codon pair deoptimization of core herpesvirus genes. Virology. 516:219-226. https://doi.org/10.1016/j.virol.2018.01.020.Genomic variation between genetic lines of white leghorns differed in resistance to Marek’s disease-(Peer Reviewed Journal) Xie, Q., Chang, S., Dong, K., Dunn, J.R., Song, J., Zhang, H. 2017. Genomic fariation between genetic lines of white leghorns differed in resistance to Marek’s disease. Journal of Clinical Epigenetics. 3:29. https://doi.org/10.21767/2472-1158.100063.Expression of Marek's disease virus oncoprotein Meq during infection in the natural host-(Peer Reviewed Journal) Tai, S., Hearn, C.J., Umthong, S., Agafitei, O., Cheng, H.H., Dunn, J.R., Niikura, M. 2017. Expression of Marek's disease virus oncoprotein Meq during infection in the natural host. Virology. 503:103-113. doi:10.1016/j.virol.2017.01.011.Evaluation and identification of Marek’s disease virus BAC clones as standardized reagents for research-(Peer Reviewed Journal) Dunn, J.R., Reddy, S., Niikura, M., Nair, V., Fulton, J.E., Cheng, H.H. 2017. Evaluation and identification of Marek’s disease virus BAC clones as standardized reagents for research. Avian Diseases. 61(1):107-114. doi: 10.1637/0005-2086-61.1.107.In ovo evaluation of FloraMax®-B11 on Marek ́s disease HVT vaccine protective efficacy, hatchability, microbiota composition, morphometric analysis, and Salmonella Enteritidis infection in broiler chickens-(Peer Reviewed Journal) Teague, K.D., Graham, L.E., Dunn, J.R., Cheng, H.H., Anthony, N., Latorre, J.D., Meconi, A., Wolfeden, R.E., Wolfeden, A.D., Mahaffey, B.D., Baxter, M., Hernandez-Velasco, X., Merino-Guzman, R., Bielke, L.R., Hargis, B.M., Tellez, G. 2017. In ovo evaluation of FloraMax®-B11 on Marek ́s disease HVT vaccine protective efficacy, hatchability, microbiota composition, morphometric analysis, and Salmonella Enteritidis infection in broiler chickens. Poultry Science. 96(7):2074-2082. doi:10.3382/ps/pew494.Marek's disease in backyard chickens, a study of pathological findings and viral loads in tumorous and non-tumorous birds-(Peer Reviewed Journal) Mete, A., Pitesky, M.E., Gharpure, R., Famini, D., Sverlow, K., Dunn, J.R. 2016. Marek's disease in backyard chickens, a study of pathological findings and viral loads in tumorous and non-tumorous birds. Avian Diseases. 60(4):826-836. doi: 10.1637/11458-062216-Reg.Protective efficacy of a recombinant bacterial artificial chromosome clone of a very virulent Marek’s disease virus containing a reticuloendotheliosis virus long terminal repeat-(Peer Reviewed Journal) Mays, J.K., Black Pyrkosz, A.A., Spatz, S.J., Fadly, A.M., Dunn, J.R. 2016. Protective efficacy of a recombinant bacterial artificial chromosome clone of a very virulent Marek’s disease virus containing a reticuloendotheliosis virus long terminal repeat. Avian Pathology. 45(6):1-31. doi:10.1080/03079457.2016.1197376.Effects of T-2 toxin on turkey herpesvirus–induced vaccinal immunity against
Marek’s disease-(Peer Reviewed Journal) Kufuor-Mensah, E., Reed, W.M., Sleight, S., Pestka, J., Fadly, A.M., Dunn, J.R. 2016. Effects of T-2 toxin on turkey herpesvirus–induced vaccinal immunity against Marek’s disease. Avian Diseases. 60(1):56-62. doi: 10.1637/11245-072815-Reg.1.Genetic susceptibility to and presence of endogenous avian leukosis viruses impose no significant impact on survival days of chickens challenged with very virulent plus Marek's disease virus-(Peer Reviewed Journal) Chang, S., Xie, Q., Wang, C., Heidari, M., Ernst, C.W., Dunn, J.R., Zhang, H. 2015. Genetic susceptibility to and presence of endogenous avian leukosis viruses impose no significant impact on survival days of chickens challenged with very virulent plus Marek's disease virus. Annals of Virology and Research. 1(2):1007.Efficacy of a recombinant turkey herpesvirus H5 vaccine against challenge with H5N1 clades 1.1.2 and 2.3.2.1 highly pathogenic avian influenza viruses in domestic ducks (Anas platyrhynchos domesticus)-(Peer Reviewed Journal) Pantin Jackwood, M.J., Kapczynski, D.R., Dejesus, E., Costa-Hurtado, M., Dauphin, G., Tripodi, A., Dunn, J.R., Swayne, D.E. 2016. Efficacy of a recombinant turkey herpesvirus H5 vaccine against challenge with H5N1 clades 1.1.2 and 2.3.2.1 highly pathogenic avian influenza viruses in domestic ducks (Anas platyrhynchos domesticus). Avian Diseases. 60:22-23.Fine mapping of QTL and genomic prediction using allele-specific expression SNPs demonstrates that the complex trait of genetic resistance to Marek’s disease is predominantly determined by transcriptional regulation-(Peer Reviewed Journal) Cheng, H.H., Perumbakkam, S., Black Pyrkosz, A.A., Dunn, J.R., Muir, W.M. 2015. Fine mapping of QTL and genomic prediction using allele-specific expression SNPs demonstrates that the complex trait of genetic resistance to Marek’s disease is predominantly determined by transcriptional regulation. Biomed Central (BMC) Genomics. DOI: 10.1186/s12864-015-2016-0.Bilateral uveitis and hyphema in a Catalina Macaw (Ara ararauna x Ara macao) associated with multicentric lymphoma-(Peer Reviewed Journal) Hausmann, J.C., Mans, C., Gosling, A., Miller, J.L., Chamberlin, T., Dunn, J.R., Miller, P.E., Sladky, K.K. 2016. Bilateral uveitis and hyphema in a Catalina Macaw (Ara ararauna x Ara macao) associated with multicentric lymphoma. Journal of Avian Medicine and Surgery. 30(2):172-178. doi: 10.1647/2015-105.An observational study of the temporal and spatial patterns of Marek's-disease-associated leukosis condemnation of young chickens in the United States of America-(Peer Reviewed Journal) Kennedy, D.A., Dunn, J.R., Dunn, P.A., Read, A.F. 2015. An observational study of the temporal and spatial patterns of Marek's-disease-associated leukosis condemnation of young chickens in the United States of America. Preventive Veterinary Medicine. 120(3-4):328-335. doi:10.1016/j.prevetmed.2015.04.013.Characterizing in vivo stability and potential interactions of a UL5 helicase-primase mutation previously shown to reduce virulence and in vivo replication of Marek's disease virus-(Peer Reviewed Journal) Hildebrandt, E., Dunn, J.R., Cheng, H.H. 2015. Characterizing in vivo stability and potential interactions of a UL5 helicase-primase mutation previously shown to reduce virulence and in vivo replication of Marek's disease virus. Virus Research. 203(2015):1-3. doi: 10.1016/j.virusres.2015.03.011.Addition of a UL5 helicase-primase subunit point mutation eliminates bursal-thymic atrophy of Marek’s disease virus delta-Meq recombinant virus but reduces vaccinal protection-(Peer Reviewed Journal) Hildebrandt, E., Dunn, J.R., Cheng, H.H. 2015. Addition of a UL5 helicase-primase subunit point mutation eliminates bursal-thymic atrophy of Marek’s disease virus delta-Meq recombinant virus but reduces vaccinal protection. Avian Pathology. 44(4):254-258.Status update on worldwide incidence-(Abstract Only) Dunn, J.R. 2015. Status update on worldwide incidence. Meeting Abstract. American Veterinary Medical Association Annual Convention, July 11-14, 2015,  Boston, Massachusetts.The influence of major histocompatibility complex and vaccination with turkey herpesvirus on Marek's disease virus evolution-(Peer Reviewed Journal) Hunt, H.D., Dunn, J.R. 2015. The influence of major histocompatibility complex and vaccination with turkey herpesvirus on Marek's disease virus evolution. Avian Diseases. 59(1):122-129.Mutations within ICP4 acquired during in vitro attenuation do not alter virulence of recombinant Marek’s disease viruses in vivo-(Peer Reviewed Journal) Hildebrandt, E., Dunn, J.R., Niikura, M., Cheng, H.H. 2014. Mutations within ICP4 acquired during in vitro attenuation do not alter virulence of recombinant Marek’s disease viruses in vivo. Virology Reports. 5:10-18.The Mut UL5-I682R Marek’s disease virus with a single nucleotide mutation within the UL5 helicase-primase subunit gene not only reduces virulence, but also provides partial vaccinal protection against Marek's disease-(Peer Reviewed Journal) Hildebrandt, E., Dunn, J.R., Cheng, H.H. 2014. The Mut UL5-I682R Marek’s disease virus with a single nucleotide mutation within the UL5 helicase-primase subunit gene not only reduces virulence, but also provides partial vaccinal protection against Marek's disease. Avian Diseases. 59(1):94-97.Further observations on serotype 2 Marek's disease virus-induced enhancement of spontaneous avian leukosis virus-like bursal lymphomas in ALVA6 transgenic chickens-(Peer Reviewed Journal) Cao, W., Mays, J.K., Kulkarni, G., Dunn, J.R., Fulton, R.M., Fadly, A.M. 2015. Further observations on serotype 2 Marek's disease virus-induced enhancement of spontaneous avian leukosis virus-like bursal lymphomas in ALVA6 transgenic chickens. Avian Pathology. 44(1):23-27. DOI: 10.1080/03079457.2014.989195.Avian Disease & Oncology Lab (ADOL) Research Update-(Proceedings) Dunn, J.R., Cheng, H.H., Fadly, A.M., Heidari, M., Hunt, H.D., Zhang, H. 2014. Avian Disease & Oncology Lab (ADOL) Research Update. Proceedings of the One Hundred and Eighteenth Annual Meeting of the United States Animal Health Association. p. 411-413.Succesive outbreaks of Marek's Disease in brown commercial layer chickens on the same farm-(Abstract Only) Shivaprasad, H.L., Bland, M., Fadly, A.M., Dunn, J.R., Buscaglia, C. 2014. Succesive outbreaks of Marek's Disease in brown commercial layer chickens on the same farm. Meeting Abstract. Abstract No. 16663.Partial attenuation of Marek's disease virus by manipulation of Di-codon bias-(Abstract Only) Dunn, J.R., Silva, R.F. 2014. Partial attenuation of Marek's disease virus by manipulation of Di-codon bias [abstract]. In: Proceeding for 10th International Symposium on Marek's Disease and Avian Herpesviruses, July 20-23, 2014, East Lansing, Michigan. p.70.Characterizing a point mutation within the UL5 gene that reduces in vivo replication and MD incidence-(Abstract Only) Hildebrandt, E., Dunn, J.R., Cheng, H.H. 2014. Characterizing a point mutation within the UL5 gene that reduces in vivo replication and MD incidence [abstract]. In: Proceeding for 10th International Symposium on Marek's Disease and Avian Herpesviruses, July 20-23, 2014, East Lansing, Michigan. p. 58.Genomic selection for genetic resistance to Marek's disease-(Abstract Only) Cheng, H.H., Perumbakkam, S., Black Pyrkosz, A.A., Dunn, J.R., Muir, W.M. 2014. Genomic selection for genetic resistance to Marek's disease [abstract]. In: Proceeding of 10th International Symposium on Marek's Disease and Avian Herpesviruses, July 20-23, 2014, East Lansing, Michigan. p. 45.Protective efficacy of a recombinant BAC clone of Marek's disease virus containing REV-LTR-(Abstract Only) Mays, J.K., Dunn, J.R., Fadly, A.M. 2014. Protective efficacy of a recombinant BAC clone of Marek's disease virus containing REV-LTR [abstract]. In: Proceeding of 10th International Symposium on Marek's Disease and Avian Herpesviruses, July 20-23, 2014, East Lansing, Michigan. p. 84.Characterizing the molecular basis of attenuation of Marek’s disease virus via in vitro serial passage-(Peer Reviewed Journal) Hildebrandt, E.C., Dunn, J.R., Perumbakkam, S., Niikura, M., Cheng, H.H. 2014. Characterizing the molecular basis of attenuation of Marek’s disease virus via in vitro serial passage. Journal of Virology. 88(11):6232. Available: http://jvi.asm.org/content/88/11/6232#ref-list-1.Allele-Specific Expression Screening Demonstrates that Variation in Genetic Resistance to Marek’s Disease in Chicken is Mainly Controlled at the Transcriptional Level-(Proceedings) Cheng, H.H., Perumbakkam, S., Black Pyrkosz, A.A., Dunn, J.R., Muir, W.M. 2014. Mapping and genotypic analysis of NK-lysin gene in chicken. Proceedings of World Congress of Genetics Applied in Livestock Production. Vancouver, BC Canada, August 17, 2014.Correlation between Marek’s disease virus pathotype and replication-(Peer Reviewed Journal) Dunn, J.R., Auten, K.A., Heidari, M., Buscaglia, C. 2014. Correlation between Marek’s disease virus pathotype and replication. Avian Diseases. 58:287-292.Host genetic resistance to Marek’s disease sustains protective efficacy of herpesvirus of turkey in both experimental and commercial lines of chickens-(Peer Reviewed Journal) Chang, S., Xie, Q., Dunn, J.R., Ernst, C.W., Song, J., Zhang, H. 2014. Host genetic resistance to Marek’s disease sustains protective efficacy of herpesvirus of turkey in both experimental and commercial lines of chickens. Vaccine. 32(16):1820-1827. Available: http://www.sciencedirect.com/science/article/pii/S0264410X14001558.Detection and differentiation of CVI988 (Rispens vaccine) from other serotype 1 Marek’s disease viruses-(Peer Reviewed Journal) Gimeno, I.M., Dunn, J.R., Cortes, A.L., El-Gohary, A., Silva, R.F. 2014. Detection and differentiation of CVI988 (Rispens vaccine) from other serotype 1 Marek’s disease viruses. Avian Diseases. 58:232-243.Use of BAC clones as standardized reagents for Marek’s disease virus research-(Abstract Only) Dunn, J.R., Cheng, H.H. 2014. Use of BAC clones as standardized reagents for Marek’s disease virus research. American Veterinary Medical Association Convention, July 25-29, 2014, Denver, Colorado. Abstract No. 16755.The Genetic Architecture of Genetic Resistance to Marek's Disease-(Proceedings) Cheng, H.H., Perumbakkam, S., Black Pyrkosz, A.A., Subramaniam, S., Preeyanon, L., Dunn, J.R., Van Sambeek, F., Ansah, G., Muir, W.M. 2013. The Genetic Architecture of Genetic Resistance to Marek's Disease. In: Proceedings of the 8th European Symposium on Poultry Genetics, September 25-27,  2013, Venice, Italy. p. 12-13.Use of polymerase chain reaction in detection of Marek’s disease and reticuloendotheliosis viruses in formalin-fixed, paraffin-embedded tumorous tissues-(Peer Reviewed Journal) Cao, W., Mays, J.K., Dunn, J.R., Fulton, R.M., Silva, R.F., Fadly, A.M. 2013. Use of polymerase chain reaction in detection of Marek’s disease and reticuloendotheliosis viruses in formalin-fixed, paraffin-embedded tumorous tissues. Avian Diseases. 57:785-789.The influence of host genetics on Marek's disease virus evolution-(Peer Reviewed Journal) Hunt, H.D., Dunn, J.R. 2013. The influence of host genetics on Marek's disease virus evolution. Avian Diseases. 57(2):474-482.Positive correlation between replication rate and pathotype of Marek’s disease virus strains in maternal antibody negative chickens-(Abstract Only) Dunn, J.R., Auten, K.A., Heidari, M. 2013. Positive correlation between replication rate and pathotype of Marek’s disease virus strains in maternal antibody negative chickens [abstract]. American Association of Avian Pathologists, July 19-23, 2013, Chicago, Illinois. p. 34.Current status of Marek’s disease in the United States & worldwide based on a questionnaire survey-(Peer Reviewed Journal) Dunn, J.R., Gimeno, I.M. 2013. Current status of Marek’s disease in the United States & worldwide based on a questionnaire survey. Avian Diseases. 57(2):483-490.Research update: Avian Disease and Oncology Laboratory avian tumor viruses-(Proceedings) Fadly, A.M., Cheng, H.H., Dunn, J.R., Heidari, M., Hunt, H.D., Lee, L.F., Silva, R.F., Zhang, H. 2012. Research update: Avian Disease and Oncology Laboratory avian tumor viruses. United States Animal Health Association Proceedings. 513-516.Positive correlation between replication rate and pathotype of Marek’s disease virus strains in maternal antibody negative chickens-(Abstract Only) Auten, K.M., Heidari, M., Dunn, J.R. 2012. Positive correlation between replication rate and pathotype of Marek’s disease virus strains in maternal antibody negative chickens. Meeting Abstract. Merial-NIH National Veterinary Scholar Sympsoium. Comparative Medicine: The Key to Translation, August 2-5, 2012, Loveland, Colorado.Differential genetic variation of chickens and MD vaccine protective efficacy-(Abstract Only) Xie, Q., Chang, S., Ernst, C.W., Dunn, J.R., Song, J., Zhang, H. 2012. Differential genetic variation of chickens and MD vaccine protective efficacy [abstract]. 9th International Symposium on Marek's Disease and Avian Herpesviruses, June 24-28, 2012, Freie Universitat Berlin. p.36.Marek’s disease virus evolution in specific MHC haplotypes.-(Abstract Only) Hunt, H.D., Dunn, J.R. 2012. Marek’s disease virus evolution in specific MHC haplotypes [abstract]. 9th International Symposium on Marek's Disease and Avian Herpesviruses, June 24-28, 2012, Freie Universitat Berlin. p. 41.Current status of Marek's disease in the united states and worldwide-(Abstract Only) Dunn, J.R., Gimeno, I. 2012. Current status of Marek's disease in the united states and worldwide [abstract]. 9th International Symposium on Marek's Disease and Avian Herpesviruses, June 24-28, 2012, Freie Universitat Berlin. p. 53.Use of Polymerase chain reaction (PCR) in diagnosis of Marek’s disease and reticuloendotheliosis in formalin-fixed, paraffin-embedded tumorous tissues-(Abstract Only) Fadly, A.M., Cao, W., Fulton, R.M., Mays, J.K., Dunn, J.R., Silva, R.F. 2012. Use of Polymerase chain reaction (PCR) in diagnosis of Marek’s disease and reticuloendotheliosis in formalin-fixed, paraffin-embedded tumorous tissues. Meeting Abstract. Paper No. 12498.Ability of MEQ-deleted MDV vaccine candidates to adversely affect lymphoid organs and chicken weight gain-(Peer Reviewed Journal) Dunn, J.R., Silva, R.F. 2012. Ability of MEQ-deleted MDV vaccine candidates to adversely affect lymphoid organs and chicken weight gain. Avian Diseases. 56:494-500.Host genetic resistance sustains HVT protective efficacy comparable to CV1988/Rispens' in lines of chickens relatively resistant to Marek's disease-(Abstract Only) Zhang, H., Chang, S., Dunn, J.R., Heidari, M., Song, J., Fulton, J. 2012. Host genetic resistance sustains HVT protective efficacy comparable to CV1988/Rispens' in lines of chickens relatively resistant to Marek's disease. Plant and Animal Genome Conference. Available: https://pag.confex.com/pag/xx/webprogram/Paper3980.html.Competition between two virulent Marek's disease virus strains in vivo-(Peer Reviewed Journal) Dunn, J.R., Silva, R.F., Lee, L.F., Witter, R.L. 2012. Competition between two virulent Marek's disease virus strains in vivo. Avian Pathology. 41(3):267-275. Available: http://dx.doi.org/10.1080/03079457.2012.677804.Vaccine by chicken line interaction alters the protective efficacy against challenge with a very virulent plus strain of Marek's disease virus in white leghorn chickens-(Peer Reviewed Journal) Chang, S., Dunn, J.R., Heidari, M., Lee, L.F., Ernst, C.W., Song, J., Zhang, H. 2012. Vaccine by chicken line interaction alters the protective efficacy against challenge with a very virulent plus strain of Marek's disease virus in white leghorn chickens. World Journal of Vaccines. 2(1):1-11. Available: http://www.scirp.org/journal/wjv/.Research update: Avian Disease and Oncology Laboratory avian tumor viruses-(Proceedings) Fadly, A.M., Cheng, H.H., Dunn, J.R., Heidari, M., Hunt, H.D., Lee, L.F., Silva, R.F., Zhang, H. 2012. Research update: Avian Disease and Oncology Laboratory avian tumor viruses. In: Proceedings for the 115th Annual Meeting of the United States Animal Health Association, September 29-October 5, 2011, Buffalo, New York. 462-464.Detection of lymphoid leukosis tumors in white leghorn chickens of line ALV6 that is resistant to subgroups A and E avian leukosis virus and maintained under specific pathogen-free conditions-(Abstract Only) Fadly, A.M., Mays, J.K., Dunn, J.R., Kulkarni, G. 2011. Detection of lymphoid leukosis tumors in white leghorn chickens of line ALV6 that is resistant to subgroups A and E avian leukosis virus and maintained under specific pathogen-free conditions [CD-ROM]. American Veterinary Medical Association (AVMA) Convention, July 16-19, 2011, St. Louis, Missouri. Paper No. 11129.Appraisal of experimental and commercial Marek's disease vaccines to induce bursal and thymic atrophy-(Abstract Only) Silva, R.F., Dunn, J.R. 2011. Appraisal of experimental and commercial Marek's disease vaccines to induce bursal and thymic atrophy [CD-ROM]. American Veterinary Medical Association (AVMA) Convention, July 16-19, 2011, St. Louis, Missouri. Paper No. 11069.Correlation between Marek's disease virus replication rates and pathotype based on fifteen virus strains-(Abstract Only) Dunn, J.R. 2011. Correlation between Marek's disease virus replication rates and pathotype based on fifteen virus strains [CD-ROM]. American Veterinary Medical Association (AVMA) Convention, July 16-19, 2011, St. Louis, Missouri. Paper No. 11066.A comparative evaluation of the protective efficacy of rMd5-delta-Meq and CV1988/Rispens against a vv+ strain of Marek's disease virus infection in a series of recombinant congenic strains of white leghorn chickens-(Peer Reviewed Journal) Chang, S., Ding, Z., Dunn, J.R., Lee, L.F., Heidari, M., Song, J., Ernst, C.W., Zhang, H. 2011. A comparative evaluation of the protective efficacy of rMd5-delta-Meq and CV1988/Rispens against a vv+ strain of Marek's disease virus infection in a series of recombinant congenic strains of white leghorn chickens. Avian Diseases. 55(3):384-390.The protective efficacy of rMd5deltaMeq against challenge with a very virulent plus strain of MDV in relatively resistant lines of chickens-(Abstract Only) Chang, S., Dunn, J.R., Lee, L.F., Heidari, M., Song, J.Z., Ernst, C.W., Zhang, H.M. 2011. The protective efficacy of rMd5deltaMeq against challenge with a very virulent plus strain of MDV in relatively resistant lines of chickens [abstract]. Poultry Science Association/American Association of Avian Pathologists Abstracts, July 16-19, 2011, St. Louis, Missouri. p. 124.Identifying genetic determinants of host resistance to Marek's disease-(Abstract Only) Zhang, H., Chang, S., Dunn, J.R., Luo, J., Song, J. 2011. Identifying genetic determinants of host resistance to Marek's disease [abstract]. International Plant and Animal Genome Conference PAG XIX, January 15-19, 2011, San Diego, California. Paper #W466. Available: http://www.intl-pag.org/.Serial Transfer of a Transplantable Tumor: Implications for Marek's Vaccine Mechanisms-(Peer Reviewed Journal) Hunt, H.D., Dunn, J.R. 2011. Serial transfer of a transplantable tumor: implications for Marek's vaccine mechanisms. Avian Diseases. 55(2):293-301.Avian Disease and Oncology Laboratory (ADOL) research update-(Proceedings) Fadly, A.M., Cheng, H.H., Dunn, J.R., Heidari, M., Hunt, H.D., Lee, L.F., Silva, R.F., Zhang, H. 2011. Avian Disease and Oncology Laboratory (ADOL) research update. Proceedings One Hundred and Fourteenth Annual Meeting of the United States Animal Health Association (USAHA), November 11-17, 2010, Minneapolis, Minnesota. p. 528-530.Mortality of one-week-old chickens during naturally occurring Marek's disease virus infection-(Peer Reviewed Journal) Carvallo, F.R., French, R.A., Gilbert-Marcheterre, K., Risatti, G., Dunn, J.R., Forster, F., Kiupel, M., Smyth, J.A. 2011. Mortality of one-week-old chickens during naturally occurring Marek's disease virus infection. Veterinary Pathology. 48(5):993-998.Potential Evidence of a Unique Marek's Disease Virus Strain Circulating in Pennsylvania-(Abstract Only) Dunn, J.R., Gingerich, E. 2010. Potential evidence of a unique Marek's disease virus strain circulating in Pennsylvania [abstract]. In: 5th International Workshop on the Molecular Pathogenesis of Marek's Disease Virus and 1st Symposium on Avian Herpesviruses, October 17-20, 2010, Athens, Georgia, p. 103.`MDV-Vectored Vaccine for Infectious Laryngotracheitis-(Abstract Only) Silva, R.F., Hunt, H.D., Dunn, J.R. 2010. MDV-vectored vaccine for infectious laryngotracheitis [abstract]. In: 5th International Workshop on the Molecular Pathogenesis of Marek’s Disease Virus and 1st Symposium on Avian Herpesviruses, October 17-20, 2010, Athens, Georgia, p. 117.Low Dose Vaccination Revealed An Interaction Between Vaccine and Chicken Line Affecting Protective Efficacy-(Abstract Only) Zhang, H., Chang, S., Dunn, J.R., Heidari, M., Lee, L.F. 2010. Low dose vaccination revealed an interaction between vaccine and chicken line affecting protective efficacy [abstract]. In: 5th International Workshop on the Molecular Pathogenesis of Marek's Disease Virus and 1st Symposium on Avian Herpesviruses, October 17-20, 2010, Athens, Georgia, p. 129.Diagnosis of Marek's Disease From a Japanese Quail (Coturnix Japonica) Using Paraffin-embedded Liver-(Abstract Only) Dunn, J.R., Southard, T., Cooper, C., Kiupel, M., Witter, R.L. 2010. Diagnosis of Marek's Disease From a Japanese Quail (Coturnix Japonica) Using Paraffin-embedded Liver [abstract]. In: American Association of Avian Pathologists Symposium and Scientific Program, August 1-4, 2010, Atlanta, Georgia. Paper No. 9389.Genetics and Vaccine Efficacy: Host Genetic Variation Affecting Marek's Disease Vaccine Efficacy in White Leghorn Chickens-(Peer Reviewed Journal) Chang, S., Dunn, J.R., Heidari, M., Lee, L.F., Song, J., Ernst, C.W., Ding, Z., Bacon, L.D., Zhang, H. 2010. Genetics and Vaccine Efficacy: Host Genetic Variation Affecting Marek's Disease Vaccine Efficacy in White Leghorn Chickens. Poultry Science. 89(10):2083-2091.The Effect of the Time Interval Between Exposures On the Susceptibility of Chickens to Superinfection with Marek Disease Virus-(Peer Reviewed Journal) Dunn, J.R., Witter, R.L., Silva, R.F., Lee, L.F., Finlay, J., Marker, B.A., Kaneene, J.B., Fulton, R.M., Fitzgerald, S.D. 2010. The Effect of the Time Interval Between Exposures on the Susceptibility of Chickens to Superinfection with Marek Disease Virus. Avian Diseases. 54(3):1038-1049.Genome-Wide SNP Association Analysis for Loci Conferring Marek's Disease-(Abstract Only) Chang, S., Dunn, J.R., Heidari, M., Mitra, A., Song, J., Zhang, H. 2010. Genome-wide SNP association analysis for loci conferring Marek's disease [abstract]. In: 32nd Conference of the International Society for Animal Genetics Program and Abstract Book, July 26-30, 2010, Edinburgh, Scotland. Page No. 5088.A MEQ Deleted Marek's Disease Virus Cloned as a Bacterial Artificial Chromosome is a Highly Efficacious Vaccine-(Peer Reviewed Journal) Silva, R.F., Dunn, J.R., Cheng, H.H., Niikura, M. 2010. A MEQ-Deleted Marek's Disease Virus Cloned as a Bacterial Artificial Chromosome Is a Highly Efficacious Vaccine. Avian Diseases. 54(2):862-869.Virus Competition for Shedding and Tumor Formation Over Time in Marek's Disease Virus Dual-infected Chickens-(Abstract Only) Dunn, J.R., Witter, R.L., Silva, R.F., Lee, L.F., Fitzgerald, S.D., Kaneene, J.B., Fulton, R.M. 2009. Virus Competition for Shedding and Tumor Formation Over Time in Marek's Disease Virus Dual-infected Chickens [abstract]. In: 146th American Veterinary Medical Association Convention Notes, July 11-14, 2009, Seattle, Washington. Paper No. 7655.Retroviral delivery of RNA interference against Marek's disease virus in vivo-(Peer Reviewed Journal) Chen, M., Payne, W.S., Dunn, J.R., Chang, S., Zhang, H.M., Hunt, H.D., Dodgson, J.B. 2009. Retroviral Delivery of RNA Interference Against Marek's Disease Virus In Vivo. Poultry Science. 88(7):1373-1380.Non-MHC genomic variation affecting Marek’s disease resistance and vaccine protective efficiency-(Abstract Only) Chang, S., Dunn, J.R., Heidari, M., Lee, L.F., Song, J., Dodgson, J., Ding, Z., Zhang, H. 2009. Non-MHC Genomic Variation Affecting Marek’s Disease Resistance and Vaccine Protective Efficiency [abstract]. International Plant and Animal Genome XVII Conference, January 9-14, 2009, San Diego, California. p. 526.Protective efficacy of a MEQ deleted BAC clone of Marek's disease virus-(Abstract Only) Silva, R.F., Lee, L.F., Heidari, M., Dunn, J.R. 2008. Protective efficacy of a MEQ deleted BAC clone of Marek's disease virus [abstract]. American Veterinary Medical Association Convention Notes. 145th AVMA Annual Convention, July 19-22, 2008, New Orleans, LA. 2008 CD-ROM.Frequency of multiple serotype 1 Marek's disease virus strains in feather follicle epithelium and tumor cells following superinfection-(Abstract Only) Dunn, J.R., Witter, R.L., Silva, R.F., Lee, L.F. 2008. Frequency of multiple serotype 1 Marek's disease virus strains in feather follicle epithelium and tumor cells following superinfection [abstract]. American Veterinary Medical Association Convention Notes. 145th AVMA Annual Convention, July 19-22, 2008, New Orleans, LA. 2008 CD-ROM.Genetic bases for Marek's disease resistance-(Abstract Only) Zhang, H., Heidari, M., Dunn, J.R., Yu, Y., Song, J. 2008. Genetic bases for Marek's disease resistance. Plant and Animal Genome Conference Proceedings. p. 96.The effect of vaccination on Marek's disease virus shedding-(Abstract Only) Silva, R.F., El-Gohary, A., Dunn, J.R. 2007. The effect of vaccination on Marek's disease virus shedding [abstract]. American Association of Avian Pathologists/American Veterinary Medical Association Abstract. p. 39.A comparison between Marek's disease virus production in feather pulp versus feather follicle epithelium (FFE)-(Abstract Only) Dunn, J.R., Finlay, J.B., Witter, R.L., Silva, R.F. 2007. A comparison between Marek's disease virus production in feather pulp versus feather follicle epithelium (FFE) [abstract]. American Association of Avian Pathologists/American Veterinary Medical Association Abstract. p. 40.MDV-induced skin leukosis in scaleless chickens: tumor development in the absence of feather follicles-(Peer Reviewed Journal) Heidari, M., Fitzgerald, S.D., Zhang, H.M., Silva, R.F., Lee, L.F., Dunn, J.R. 2007. MDV-induced skin leukosis in scaleless chickens: tumor development in the absence of feather follicles. Avian Diseases. 51(3):713-718.Putative evidence that genes outside the MHC have a significant influence on efficacy of Marek's disease vaccine-(Abstract Only) Zhang, H.M., Dunn, J.R., Witter, R.L., Heidari, M., Bacon, L.D., Cui, Y., Song, J., Cheng, H.H. 2007. Putative evidence that genes outside the MHC have a significant influence on efficacy of Marek's disease vaccine [abstract]. Plant and Animal Genome VX Conference Abstracts. Paper #107. p. 128.THE THRESHOLD OF GENETIC SUSCEPTIBILITY TO MAREK'S DISEASE-(Abstract Only) Zhang, H.M., Dunn, J.R., Heidari, M., Witter, R.L., Kulkarni, G., Bacon, L.D. 2006. The threshold of genetic susceptibility to Marek's disease [abstract]. 4th International Workshop on Molecular Pathogenesis of Marek's Disease Virus. p. 33.METHODS TO DISTINQUISH SELECTED SEROTYPE 1 MDV IN DUALLY INFECTED CHICKENS-(Abstract Only) Dunn, J.R., Gross, S.B., Witter, R.L., Silva, R.F., Lee, L.F. 2006. Methods to distinquish selected serotype 1 MDV in dual-infected chickens [abstract]. 4th International Workshop on Molecular Pathogenesis of Marek's Disease Virus. p. 39.A COMPARISON BETWEEN MDV PRODUCTION IN FEATHER PULP VERSUS FEATHER FOLLICLE EPITHELIUM (FFE)-(Abstract Only) Finlay, J.B., Dunn, J.R., Witter, R.L., Silva, R.F. 2006. A comparison between MDV production in feather pulp versus feather follicle epithelium (FFE)[abstract].  2006 Merck/Merial National Veterinary Scholar Symposium.  Veterinary Medicine and Biomedical Science:  Creating the Gumbo of Progress. p. 97.METHODS TO DISTINGUISH SELECTED SEROTYPE 1 MDV IN DUALLY INFECTED CHICKENS-(Abstract Only) Dunn, J.R., Gross, S.B., Witter, R.L., Silva, R.F., Lee, L.F. 2006. Methods to distinguish selected serotype 1 MDV in dually infected chickens [abstract]. American Veterinary Medical Association and American Association of Avian Pathologists Scientific Program. p. 73.  Research Interests My lab works primarily with Marek’s disease (a herpesvirus-induced T cell cancer), with main interests including diagnosis and virus characterization, virus evolution, and disease prevention.  Current projects include: Characterize the effect of vaccination on the evolution of Marek’s disease virus field strains
Surveillance for virulent strains of avian tumor viruses in field flocks and development of improved diagnostics for new strains
Determine host genetic effect on virus transmission
Define innate defense mechanisms that contribute to Marek’s disease vaccinal synergy  Education and Employment 1998                            BS, University of Michigan 2003                            DVM, Michigan State University 2003                            MS, Michigan State University (Epidemiology) 2009                            PhD, Michigan State University (Pathology) 2004-date                    USDA, ARS


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