U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Research Program Support: Ames, IA
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Midwest Area Ames, Iowa National Animal Disease Center Research Program Support People & Locations







Samuel  Humphrey
                        Research Program Support

                        




                        
                        Microbiologist
                        Phone: (515) 337-7495
                        
                        
                        Fax: (Employee information on this page comes from the REE Directory. Please contact your front office staff to update the REE Directory.)
                            **Publications**
                                                (Clicking on the reprint icon
                                                    Reprint Icon
                                                    will take you to the publication reprint.)B cell phenotypes and maturation states in cows naturally infected with Mycobacterium avium subsp. Paratuberculosis
                                                        

- (Peer Reviewed Journal)Stabel, J.R., Bannantine, J.P., Humphrey, S.B. 2022. B cell phenotypes and maturation states in cows naturally infected with Mycobacterium avium subsp. Paratuberculosis. PLOS ONE. https://doi.org/10.1371/journal.pone.0278313.Short communication: Lymphocyte proliferative responses in cattle naturally infected with digital dermatitis consists of CD8+ and gamma delta T cells but lack CD4+ T cells
                                                        

- (Peer Reviewed Journal)Wilson-Welder, J.H., Nally, J.E., Alt, D.P., Humphrey, S.B., Olsen, S.C. 2018. Short communication: Lymphocyte proliferative responses in cattle naturally infected with digital dermatitis consists of CD8plus and gamma delta T cells but lack CD4plus T cells. Journal of Dairy Science. 101(9):8301-8307. https://doi.org/10.3168/jds.2017-13913.Butyricicoccus porcorum sp. nov. a butyrate-producing bacterium from swine intestinal tract
                                                        

- (Peer Reviewed Journal)Trachsel, J., Humphrey, S.B., Allen, H.K. 2018. Butyricicoccus porcorum sp. nov. a butyrate-producing bacterium from swine intestinal tract. International Journal of Systematic and Evolutionary Microbiology. 68:1737-1742. https://doi.org/10.1099/ijsem.0.002738.Morphological changes in cultured bovine lymphoid cell lines associated with bovine viral diarrhea virus (BVDV) single and dual infections with bovine leukemia virus (BLV)

- (Abstract Only)Gamma delta T cells are early responders to Mycobacterium avium subsp. paratuberculosis in colostrum-replete Holstein calves

- (Peer Reviewed Journal)Krueger, L.A., Beitz, D.C., Humphrey, S.B., Stabel, J.R. 2016. Gamma delta T cells are early responders to Mycobacterium avium subsp. paratuberculosis in colostrum-replete Holstein calves. Journal of Dairy Science. 99(11):9040-9050. doi: 10.3168/jds.2016-11144.Cellular responses to Mycobacterium avium, subsp. paratuberculosis in colostrum-deprived and colostrum-replete holstein calves supplemented with fat-soluble vitamins

- (Abstract Only)Kruger, L.A., Beitz, D.C., Humphrey, S.B., Stabel, J.R. 2016. Cellular responses to Mycobacterium avium, subsp. paratuberculosis in colostrum-deprived and colostrum-replete holstein calves supplemented with fat-soluble vitamins. Meeting Abstract. Kruger, L.A., Beitz, D.C., Humphrey, S.B., Stabel, J. 2016. 13th International Colloquium on Paratuberculosis. p. 41.Antibiotics in feed induce prophages in swine fecal microbiomes

- (Peer Reviewed Journal)Allen, H.K., Looft, T.P., Bayles, D.O., Humphrey, S.B., Levine, U.Y., Alt, D.P., Stanton, T.B. 2011. Antibiotics in feed induce prophages in swine fecal microbiomes. mBio [serial online]. 2(6). Available: http://mbio.asm.org/content/2/6/e00260-11.Chlortetracycline - resistant intestinal bacteria in organically-raised and feral swine

- (Peer Reviewed Journal)Stanton, T.B., Humphrey, S.B., Stoffregen, W.C. 2011. Chlortetracycline - resistant intestinal bacteria in organically-raised and feral swine. Applied and Environmental Microbiology. 77(20):7167-7170.The persistence of antibiotic resistance: evaluation of a probiotic approach using antibiotic-sensitive M. elsdenii strains to prevent colonization of swine by antibiotic-resistant strains

- (Peer Reviewed Journal)Stanton, T.B., Humphrey, S.B. 2011. Persistence of antibiotic resistance: evaluation of a probiotic approach using antibiotic-sensitive M. elsdenii strains to prevent colonization of swine by antibiotic-resistant strains. Applied and Environmental Microbiology. 77(20):7158-7166.Diverse Phage in the Swine Intestine

- (Abstract Only)Characteristics and Induction of VSH-1, Gene Transfer Agent of B. hyodysenteriae

- (Abstract Only)Stanton, T.B., Humphrey, S.B., Zuerner, R.L. 2009. Characteristics and Induction of VSH-1, Gene Transfer Agent of B. hyodysenteriae [abstract].  In: Proceedings of 5th International Conference on Colonic Spirochaetal Infections in Animals and Humans, June 8-10, 2009, Leon, Spain. p.25-26.Identification of a Divided Genome for VSH-1, the Prophage-Like Gene Transfer Agent of Brachyspira hyodysenteriae

- (Peer Reviewed Journal)Stanton, T.B., Humphrey, S.B., Bayles, D.O., Zuerner, R.L. 2008. Identification of a Divided Genome for VSH-1, the Prophage-Like Gene Transfer Agent of Brachyspira hyodysenteriae. Journal of Bacteriology. 191(5):1719-1721.COLLATERAL EFFECTS OF ANTIBIOTICS - CARBADOX AND METRONIDAZOLE INDUCE VSH-1 AND FACILITATE GENE TRANSFER AMONG BRACHYSPIRA HYODYSENTERIAE STRAINS

- (Peer Reviewed Journal)Stanton, T.B., Humphrey, S.B., Sharma, V.K., Zuerner, R.L. 2008. Collateral effects of antibiotics - carbadox and metronidazole induce VSH-1 and facilitate gene transfer among Brachyspira hyodysenteriae strains. Applied and Environmental Microbiology. 74(10):2950-2956.ANTIMICROBIAL COLLATERAL EFFECTS:  INDUCTION OF THE PROPHAGE-LIKE, GENE TRANSFER AGENT VSH-1 IN CULTURES OF THE SWINE PATHOGEN BRACHYPSIRA HYODYSENTERIAE

- (Abstract Only)Stanton, T.B., Sharma, V.K., Humphrey, S.B., Zuerner, R.L. 2006. Antimicrobial collateral effects:  Induction of the prophage-like, gene transfer agent VSH-1 in cultures of the swine pathogen Brachypsira hyodysenteriae [abstract]. American Society for Microbiology. May 20-26, 2006, Orlando, Florida. 2006 CDROM.IDENTIFICATION OF GENES OF VSH-1, A PROPHAGE-LIKE GENE TRANSFER AGENT OF BRACHYSPIRA HYODYSENTERIAE

- (Peer Reviewed Journal)Matson, E.G., Thompson, M., Humphrey, S.B., Zuerner, R.L., Stanton, T.B. 2005. Identification of genes of VSH-1, a prophage-like gene transfer agent of Brachyspira hyodysenteriae. Journal of Bacteriology. 187(17):5885-5892.VSH-1, A PROPHAGE-LIKE, GENE TRANSFER AGENT OF BRACHYSPIRA HYODYSENTERIAE AND (PROBABLY) OF OTHER BRACHYSPIRA SPECIES

- (Abstract Only)Stanton, T.B., Matson, E.G., Humphrey, S.B., Zuerner, R.L., Sharma, V.K. 2005. VSH-1, a prophage-like, gene transfer agent of Brachyspira hyodysenteriae and (probably) of other Brachyspira species [abstract]. Third International Conference on Colonic Spirochaetal Infections in Animals and Humans. p. 15-16.HYBRID TET GENES AND TET GENE NONMENCLATURE - REQUEST FOR OPINION

- (Peer Reviewed Journal)Stanton, T.B., Humphrey, S.B., Scott, K.P., Flint, H.J. 2005. Hybrid tet genes and tet gene nonmenclature - request for opinion. Antimicrobial Agents and Chemotherapy. 49(3):1265-1266.CHARACTERISTICS OF VSH-1 GENE TRANSCRIPTION IN BRACHYSPIRA HYODYSENTERIAE

- (Abstract Only)MATSON, E.G., HUMPHREY, S.B., ZUERNER, R.L., STANTON, T.B. CHARACTERISTICS OF VSH-1 GENE TRANSCRIPTION IN BRACHYSPIRA HYODYSENTERIAE. PROCEEDINGS OF THE GORDON RESEARCH CONFERENCE. 2004. P. 2.DETECTION OF BACTERIOPHAGE VSH-1 SVP38 GENE IN BRACHYSPIRA SPIROCHETES

- (Peer Reviewed Journal)STANTON, T.B., THOMPSON, M.G., HUMPHREY, S.B., ZUERNER, R.L. DETECTION OF BACTERIOPHAGE VSH-1 SVP38 GENE IN BRACHYSPIRA SPIROCHETES. FEDERATION OF EUROPEAN MICROBIOLOGICAL SOCIETIES MICROBIOLOGY LETTERS. 2003. V. 224. P. 225-229.ISOLATION OF TETRACYCLINE-RESISTANT MEGASPHAERA ELSDENII STRAINS WITH NOVEL MOSAIC GENE COMBINATIONS OF TET(O) AND TET(W) FROM SWINE

- (Peer Reviewed Journal)STANTON, T.B., HUMPHREY, S.B. ISOLATION OF TETRACYCLINE-RESISTANT MEGASPHAERA ELSDENII STRAINS WITH NOVEL MOSAIC GENE COMBINATIONS OF TET(O) AND TET(W) FROM SWINE. APPLIED AND ENVIRONMENTAL MICROBIOLOGY. 2003. V. 69. P. 3874-3882.UNUSUAL TETRACYCLINE RESISTANCE IN MEGASPHAERA ELSDENII STRAINS FROM SWINE CECAL CONTENTS

- (Abstract Only)Stanton, T.B., Humphrey, S.B. 2002. Unusual tetracycline resistance in megasphaera elsdenii strains from swine cecal contents [abstract]. American Society for Microbiology. p. 515.IDENTIFICATION OF BACTERIOPHAGE VSH-1 GENES AND ANALYSIS OF THEIR INDUCTION OF BRACHYSPIRA HYODYSENTERIAE

- (Abstract Only)Matson, E.G., Humphrey, S.B., Thompson, M.G., Stanton, T.B. 2002. Identification of bacteriophage vsh-1 genes and analysis of their induction of brachyspira hyodysenteriae [abstract]. American Society for Microbiology. p. 179.VSH-1, A GENERALIZED TRANSDUCING BACTERIOPHAGE OF THE ANAEROBIC SPIROCHETE BRACHYSPIRA HYODYSENTERIAE, APPEARS DEFECTIVE IN SELF-REPLICATION

- (Abstract Only)BRACHYSPIRA (SERPULINA) HYODYSENTERIAE GYRB MUTANTS AND INTERSTRAIN        TRANSFER OF COUMERMYCIN A1 RESISTANCE

- (Peer Reviewed Journal)BRACHYSPIRA (SERPULINA) HYODYSENTERIAE GYRB MUTANTS AND INTERCELLULAR      TRANSFER OF COUMERMYCIN RESISTANCE

- (Abstract Only)IDENTIFYING GENES OF VSH-1, A NOVEL GENE TRANSFER AGENT OF THE             ENTEROPATHOGENIC SPIROCHETE S. HYODYSENTERIAE

- (Abstract Only)BIG FLEAS HAVE LITTLE FLEAS?  VSH-1, AN UNUSUAL BACTERIOPHAGE OF           SERPULINA HYODYSENTERIAE                                                   (AUSTRALIAN SOCIETY FOR MICROBIOLOGY MTG.)

- (Abstract Only)IDENTIFICATION OF GENES ENCODING VIRION-ASSOCIATED PROTEINS OF VSH-1,      A BACTERIOPHAGE OF SERPULINA HYODYSENTERIAE

- (Abstract Only)PURIFICATION AND CHARACTERIZATION OF VSH-1, A GENERALIZED TRANSDUCING      BACTERIOPHAGE OF SERPULINA HYODYSENTERIAE

- (Peer Reviewed Journal)VSH-1, A BACTERIOPHAGE-LIKE GENE VECTOR FOR SERPULINA HYODYSENTERIAE

- (Proceedings)MITOMYCIN C INDUCTION OF BACTERIOPHAGES FROM SERPULINA HYODYSENTERIAE      AND SERPULINA INNOCENS

- (Peer Reviewed Journal)


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov