cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15468/dl.pfn4bs
title: Occurrence Download

description: A dataset containing 1402 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Siphonostomatoida",
 "HasCoordinate is true",
 "Country is Japan",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 1402 records from 16 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0256874-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.esgup9
title: Occurrence Download

description: A dataset containing 1159 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Ctenosaura acanthura (Shaw, 1802)"
 ]
}

 The dataset includes 1159 records from 56 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0226254-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/inscriptifact-ouc112031259
title: Cuneiform Tablet 1913.14.1528, Spurlock 1913.14.1528

description: [Text Description:] Delivery of silver ❧ [Text or Publication Number Note:] Spurlock 1913.14.1528; CDLI P421380 ❧ [Medium:] Clay ❧ [Script Note:] Non-Alphabetic Cuneiform ❧ [Physical Object Description:] Yellowish Gray (10YR 8/2) -body Light Brown (5YR 6/6) -orangish discoloration Medium Gray (N 5.5/ 24.6% R) -dark discoloration ❧ [Physical Object Note:] 5.2 x 3.8 x 1.9 cm (40 g)
DOI: 10.15468/dl.bd3uyn
title: Occurrence Download

description: A dataset containing 8434 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is Colección del Herbario de la Universidad Tecnológica del Chocó"
 ]
}

 The dataset includes 8434 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0116943-210914110416597/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.s3zcex
title: Occurrence Download

description: A dataset containing 6 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Togo",
 "TaxonKey is Jatropha curcas L."
 ]
}

 The dataset includes 6 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0192056-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/inscriptifact-ouc112031260
title: Cuneiform Tablet 1913.14.1528, Spurlock 1913.14.1528

description: [Text Description:] Delivery of silver ❧ [Text or Publication Number Note:] Spurlock 1913.14.1528; CDLI P421380 ❧ [Medium:] Clay ❧ [Script Note:] Non-Alphabetic Cuneiform ❧ [Physical Object Description:] Yellowish Gray (10YR 8/2) -body Light Brown (5YR 6/6) -orangish discoloration Medium Gray (N 5.5/ 24.6% R) -dark discoloration ❧ [Physical Object Note:] 5.2 x 3.8 x 1.9 cm (40 g)
DOI: 10.15468/dl.c3bupt
title: Occurrence Download

description: A dataset containing 271 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Nomascus gabriellae (Thomas, 1909)"
 ]
}

 The dataset includes 271 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0244602-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.7qy6n4
title: Occurrence Download

description: A dataset containing 138 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-8.80845 43.08843,-8.74109 43.08843,-8.74109 43.14509,-8.80845 43.14509,-8.80845 43.08843))",
 "TaxonKey is Plantae"
 ]
}

 The dataset includes 138 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0232034-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/inscriptifact-ouc112031180
title: Cuneiform Tablet 1913.14.1528, Spurlock 1913.14.1528

description: [Text Description:] Delivery of silver ❧ [Text or Publication Number Note:] Spurlock 1913.14.1528; CDLI P421380 ❧ [Medium:] Clay ❧ [Script Note:] Non-Alphabetic Cuneiform ❧ [Physical Object Description:] Yellowish Gray (10YR 8/2) -body Light Brown (5YR 6/6) -orangish discoloration Medium Gray (N 5.5/ 24.6% R) -dark discoloration ❧ [Physical Object Note:] 5.2 x 3.8 x 1.9 cm (40 g)
DOI: 10.15468/dl.86bzs8
title: Occurrence Download

description: A dataset containing 78 species occurrences available in GBIF matching the query:
{
 "and" : [
 "OccurrenceStatus is Present",
 "TaxonKey is Eschweilera tetrapetala S.A.Mori"
 ]
}

 The dataset includes 78 records from 26 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0192058-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ttjh2u
title: Occurrence Download

description: A dataset containing 590055 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Observation",
 "Continent is Asia",
 "OccurrenceStatus is Present"
 ]
}

 The dataset includes 590055 records from 19 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0256853-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/inscriptifact-ouc112036422
title: Cuneiform Tablet 1913.14.1683, Spurlock 1913.14.1683

description: [Text Description:] Delivery of sesame ❧ [Text or Publication Number Note:] Spurlock 1913.14.1683; CDLI P421534 ❧ [Medium:] Clay ❧ [Script Note:] Non-Alphabetic Cuneiform ❧ [Physical Object Description:] Dark Gray (N 3.25/ 7.7% R) -discoloration Moderate Yellowish Pink (5YR 8/4) Yellowish White (10YR 9/2) ❧ [Physical Object Note:] 3.4 x 2.5 x 1.2 cm (10 g)
DOI: 10.15468/dl.d6x3yt
title: Occurrence Download

description: A dataset containing 73 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Gentianella dielsiana (Gilg) J.S.Pringle"
 ]
}

 The dataset includes 73 records from 20 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0226245-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.7hcqjx
title: Occurrence Download

description: A dataset containing 3436002 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Animalia",
 "HasCoordinate is true",
 "Country is Japan",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 3436002 records from 1070 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0256889-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/inscriptifact-ouc112036424
title: Cuneiform Tablet 1913.14.1683, Spurlock 1913.14.1683

description: [Text Description:] Delivery of sesame ❧ [Text or Publication Number Note:] Spurlock 1913.14.1683; CDLI P421534 ❧ [Medium:] Clay ❧ [Script Note:] Non-Alphabetic Cuneiform ❧ [Physical Object Description:] Dark Gray (N 3.25/ 7.7% R) -discoloration Moderate Yellowish Pink (5YR 8/4) Yellowish White (10YR 9/2) ❧ [Physical Object Note:] 3.4 x 2.5 x 1.2 cm (10 g)
DOI: 10.15468/dl.audreu
title: Occurrence Download

description: A dataset containing 168 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Continent is Asia",
 {
 "or" : [
 "Country is Chinese Taipei",
 "Country is India",
 "Country is Japan",
 "Country is China",
 "Country is Korea, Republic of",
 "Country is Hong Kong",
 "Country is Nepal",
 "Country is Russian Federation",
 "Country is Bhutan",
 "Country is Mongolia"
 ]
 },
 "Geometry POLYGON((73.55973 14.80689,175.51285 14.80689,175.51285 55.58814,73.55973 55.58814,73.55973 14.80689))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Phalacrocorax carbo (Linnaeus, 1758)",
 "Year 1980-2021"
 ]
}

 The dataset includes 168 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0192066-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.s7ym8z
title: Occurrence Download

description: A dataset containing 462 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Gonolobus chloranthus Schltdl."
 ]
}

 The dataset includes 462 records from 40 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0232037-230224095556074/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25549/inscriptifact-ouc112036433
title: Cuneiform Tablet 1913.14.1683, Spurlock 1913.14.1683

description: [Text Description:] Delivery of sesame ❧ [Text or Publication Number Note:] Spurlock 1913.14.1683; CDLI P421534 ❧ [Medium:] Clay ❧ [Script Note:] Non-Alphabetic Cuneiform ❧ [Physical Object Description:] Dark Gray (N 3.25/ 7.7% R) -discoloration Moderate Yellowish Pink (5YR 8/4) Yellowish White (10YR 9/2) ❧ [Physical Object Note:] 3.4 x 2.5 x 1.2 cm (10 g)
DOI: 10.25549/inscriptifact-ouc112036394
title: Cuneiform Tablet 1913.14.1683, Spurlock 1913.14.1683

description: [Text Description:] Delivery of sesame ❧ [Text or Publication Number Note:] Spurlock 1913.14.1683; CDLI P421534 ❧ [Medium:] Clay ❧ [Script Note:] Non-Alphabetic Cuneiform ❧ [Physical Object Description:] Dark Gray (N 3.25/ 7.7% R) -discoloration Moderate Yellowish Pink (5YR 8/4) Yellowish White (10YR 9/2) ❧ [Physical Object Note:] 3.4 x 2.5 x 1.2 cm (10 g)
DOI: 10.15468/dl.asbn3f
title: Occurrence Download

description: A dataset containing 5 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasCoordinate is true",
 "TaxonKey is Quadrisphaera granulorum Maszenan et al., 2005"
 ]
}

 The dataset includes 5 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0014134-250402121839773/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.15014669
title: HDMA Fragment Files + Count Matrices Thymus

description: This is the ATAC fragment files and RNA count matrices for HDMA (Liu*, Jessa*, Kim*, Ng* et al, bioRxiv 2025). A detailed description of the main data types deposited on Zenodo can be found here.
DOI: 10.5281/zenodo.15014668
title: HDMA Fragment Files + Count Matrices Thymus

description: This is the ATAC fragment files and RNA count matrices for HDMA (Liu*, Jessa*, Kim*, Ng* et al, bioRxiv 2025). A detailed description of the main data types deposited on Zenodo can be found here.
DOI: 10.5281/zenodo.18176132
title: Volumetric Support of Rapidly Rotating Gas Giants in CRVD

description: "Gas giants rotate rapidly not because they must, but because their volumetric structure strongly supports such rotation. Faster rotation is the signature of stronger CRVD support."
DOI: 10.5281/zenodo.18176133
title: Volumetric Support of Rapidly Rotating Gas Giants in CRVD

description: "Gas giants rotate rapidly not because they must, but because their volumetric structure strongly supports such rotation. Faster rotation is the signature of stronger CRVD support."
DOI: 10.5281/zenodo.18173176
title: AI-guided competitive docking for virtual screening and compound efficacy prediction

description: Author : Manon Mirgaux, Valeria Barcelli, Adeline C.Y. Chua, Pablo Bifani, René Wintjens

This dataset includes the complex models produced by diffusion-based tools (AlphaFold3, Boltz-1, and Boltz-2), together with all analysis scripts, intermediate data, and results used across the protein benchmark set.  The data is licensed under the respective terms-of-use and data usage agreements (when applicable). Please consult the terms before downloading or otherwise using the data.
DOI: 10.5281/zenodo.17795310
title: AI-guided competitive docking for virtual screening and compound efficacy prediction

description: Author : Manon Mirgaux, Valeria Barcelli, Adeline C.Y. Chua, Pablo Bifani, René Wintjens

This dataset includes the complex models produced by diffusion-based tools (AlphaFold3, Boltz-1, and Boltz-2), together with all analysis scripts, intermediate data, and results used across the protein benchmark set.  The data is licensed under the respective terms-of-use and data usage agreements (when applicable). Please consult the terms before downloading or otherwise using the data.
DOI: 10.25505/fiz.icsd.cc2pcq3x
title: CSD 2483909: Experimental Crystal Structure Determination

description: Related Article: D.O. Charkin, D.S. Degterev, D.V. Deyneko, V.E. Kireev, Yu.A. Vaitieva, V.Yu. Grishaev, A.A. Kompanchenko, A.N. Gosteva, A.M. Banaru, S.M. Aksenov|2025|Solid State Sciences|174||doi:10.1016/j.solidstatesciences.2025.108200
description: An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the joint CCDC and FIZ Karlsruhe Access Structures service and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.13145/bacdive168378.20251217.10
title: Chimaeribacter californicus Rossi and Fisher 2020

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive168379.20250331.9.3
title: Sphingomonas populi Li et al. 2020

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.5517/ccdc.csd.cc2pj3r3
title: CCDC 2488145: Experimental Crystal Structure Determination

description: Related Article: Zhipeng Miao, Yahui Han, Qi Pan, Yipei Wang, Haibin Wang, Yunhang Xie, Jie Yu, Yapeng Shi, Rui Zhang, Yanlin Song, Pengwei Li|2025|Matter|9|1|doi:10.1016/j.matt.2025.102482
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc2pj3s4
title: CCDC 2488146: Experimental Crystal Structure Determination

description: Related Article: Zhipeng Miao, Yahui Han, Qi Pan, Yipei Wang, Haibin Wang, Yunhang Xie, Jie Yu, Yapeng Shi, Rui Zhang, Yanlin Song, Pengwei Li|2025|Matter|9|1|doi:10.1016/j.matt.2025.102482
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc2pj3t5
title: CCDC 2488147: Experimental Crystal Structure Determination

description: Related Article: Zhipeng Miao, Yahui Han, Qi Pan, Yipei Wang, Haibin Wang, Yunhang Xie, Jie Yu, Yapeng Shi, Rui Zhang, Yanlin Song, Pengwei Li|2025|Matter|9|1|doi:10.1016/j.matt.2025.102482
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.57702/wx98h0yw
title: InstanceRefer

description: Cooperative holistic understanding for visual grounding on point clouds through instance multi-level contextual referring
DOI: 10.13145/bacdive168379.20251217.10
title: Sphingomonas populi Li et al. 2020

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.5517/ccdc.csd.cc2pj3v6
title: CCDC 2488148: Experimental Crystal Structure Determination

description: Related Article: Zhipeng Miao, Yahui Han, Qi Pan, Yipei Wang, Haibin Wang, Yunhang Xie, Jie Yu, Yapeng Shi, Rui Zhang, Yanlin Song, Pengwei Li|2025|Matter|9|1|doi:10.1016/j.matt.2025.102482
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.5517/ccdc.csd.cc2pj3w7
title: CCDC 2488149: Experimental Crystal Structure Determination

description: Related Article: Zhipeng Miao, Yahui Han, Qi Pan, Yipei Wang, Haibin Wang, Yunhang Xie, Jie Yu, Yapeng Shi, Rui Zhang, Yanlin Song, Pengwei Li|2025|Matter|9|1|doi:10.1016/j.matt.2025.102482
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.13145/bacdive168380.20240510.9
title: Shewanella nanhaiensis Cao et al. 2021

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive168380.20251217.10
title: Shewanella nanhaiensis Cao et al. 2021

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.5517/ccdc.csd.cc2pn27p
title: CCDC 2491942: Experimental Crystal Structure Determination

description: Related Article: Zhipeng Miao, Yahui Han, Qi Pan, Yipei Wang, Haibin Wang, Yunhang Xie, Jie Yu, Yapeng Shi, Rui Zhang, Yanlin Song, Pengwei Li|2025|Matter|9|1|doi:10.1016/j.matt.2025.102482
description: An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
DOI: 10.57702/rm2ws8no
title: OpenPrompt1

description: The dataset used in the paper for training and testing the TextCraftor model.
DOI: 10.13145/bacdive168381.20250331.9.3
title: Marmoricola caldifontis Habib et al. 2020

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive168381.20251217.10
title: Marmoricola caldifontis Habib et al. 2020

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive168382.20250331.9.3
title: Prevotella illustrans Buhl et al. 2021

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive168382.20251217.10
title: Prevotella illustrans Buhl et al. 2021

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.25921/j4dc-4s82
title: Water temperature, salinity, and other parameters collected by CTD from NOAA Ship Ronald H. Brown in the north Pacific Ocean off California from 2021-06-13 to 2021-06-18 (NCEI Accession 0251388)

description: This dataset contains water temperature, salinity, and other parameters collected by CTD from NOAA Ship Ronald H. Brown in the north Pacific Ocean off California. Cruise RB-21-02 in June 2021 had the objective to service moorings for the CCE (California Current Ecosystem) project, as well as the CORC (Consortium on the Ocean's Role in Climate) project. To calibrate and validate the mooring data, CTD casts with water samples were done. The CTD data are reported here. The CTD data have been quality-controlled and adjusted using the water sample data. Additional cruise data files are available through the NOAA Rolling Deck to Repository program (R2R, see references under 'Documentation' bullet on this dataset landing page), and the water sample data are published separately through the Ocean Carbon and Acidification Data Portal at NCEI (also in references). The raw instrument data (*.xmlcon and *.hex files from the software by Sea-Bird Scientific) are also available. Processed data are in NetCDF and also in CNV format.
DOI: 10.57702/oduais6w
title: Color FERET

description: The dataset used in the paper is a color face recognition dataset, which is used to evaluate the performance of the proposed 2DPCA and R2DPCA methods.
DOI: 10.13145/bacdive168383.20250331.9.3
title: Nocardia acididurans Sirireung et al. 2021

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive168383.20251217.10
title: Nocardia acididurans Sirireung et al. 2021

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.57702/c4n6hvq5
title: Zoom and Learn

description: The dataset used for zoom and learn, a method for generalizing deep stereo matching.
DOI: 10.13145/bacdive168384.20240510.9
title: Alkalibacter mobilis Khomyakova et al. 2021

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive168384.20251217.10
title: Alkalibacter mobilis Khomyakova et al. 2021

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive168385.20241212.9.2
title: Rhodobacter flagellatus Xian et al. 2020

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.57702/jtpax5y9
title: Vehicle Re-Identification

description: Vehicle re-identification (ReID) endeavors to associate vehicle images collected from a distributed network of cameras spanning diverse traffic environments.
DOI: 10.13145/bacdive168385.20251217.10
title: Rhodobacter flagellatus Xian et al. 2020

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive168386.20240510.9
title: Frateuria flava Akter et al. 2021

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.