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

description: A dataset containing 252756 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Spatula clypeata (Linnaeus, 1758)",
 "HasCoordinate is true",
 "Month is November",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 252756 records from 163 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0268568-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.q762kq
title: Occurrence Download

description: A dataset containing 39783 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Delphinus Linnaeus, 1758"
 ]
}

 The dataset includes 39783 records from 193 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038565-181108115102211/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.tr9n3n
title: Occurrence Download

description: A dataset containing 31447 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Belarus",
 "Geometry POLYGON((27.77344 56.11616,24.78516 55.52366,22.32422 53.58729,23.55469 51.33885,29.00391 51.00823,32.51953 51.44853,33.04688 53.58729,31.64063 56.01804,27.77344 56.11616))",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Magnoliopsida"
 ]
}

 The dataset includes 31447 records from 28 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0266341-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.y4ukez
title: Occurrence Download

description: A dataset containing 2206 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 }
 ]
 },
 "TaxonKey is Harpyhaliaetus solitarius (Tschudi, 1844)"
 ]
}

 The dataset includes 2206 records from 31 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010025-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.jmu7og
title: Occurrence Download

description: A dataset containing 35644 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Olea europaea L.",
 "HasCoordinate is TRUE",
 "HasGeospatialIssue is FALSE"
 ]
}

 The dataset includes 35644 records from 167 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038566-180508205500799/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.4xevqk
title: Occurrence Download

description: A dataset containing 839 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((36.69234 36.58422,52.83225 36.58422,52.83225 48.40951,36.69234 48.40951,36.69234 36.58422))",
 "TaxonKey is Alnus incana (L.) Moench"
 ]
}

 The dataset includes 839 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0260749-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.eeqzfz
title: Occurrence Download

description: A dataset containing 5208 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Year 1990-1993",
 "Geometry POLYGON((-40.42969 37.55155,-49.92188 66.9025,-118.82812 75.39113,-168.04688 78.26391,-176.48437 45.7798,-158.20313 32.78359,-102.30469 3.30287,-85.16602 13.0174,-84.99023 18.59627,-85.69336 21.24023,-84.99023 23.51564,-75.32227 24.7987,-40.42969 37.55155))",
 "HasCoordinate is true",
 "TaxonKey is Sterna hirundo Linnaeus, 1758",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 5208 records from 14 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038568-181108115102211/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.rqjuxt
title: Occurrence Download

description: A dataset containing 117 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Italy",
 "Geometry POLYGON((6.52652 43.61948,9.03706 43.61948,9.03706 46.60974,6.52652 46.60974,6.52652 43.61948))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "PublishingOrg is 28eb1a3f-1c15-4a95-931a-4af90ecb574d",
 "TaxonKey is Emys orbicularis (Linnaeus, 1758)",
 "Year 1970-2024"
 ]
}

 The dataset includes 117 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0007383-240202131308920/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.urwcqz
title: Occurrence Download

description: A dataset containing 62 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Mantophasmatodea"
 ]
}

 The dataset includes 62 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0263670-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.n8is6y
title: Occurrence Download

description: A dataset containing 116335 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Origanum vulgare L.",
 "HasCoordinate is TRUE",
 "HasGeospatialIssue is FALSE"
 ]
}

 The dataset includes 116335 records from 498 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038570-180508205500799/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.j6tq0d
title: Occurrence Download

description: A dataset containing 11 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Mexico",
 "HasCoordinate is true",
 "TaxonKey is Epithelantha bokei L.D.Benson",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 11 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038570-181108115102211/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.6ccful
title: Occurrence Download

description: A dataset containing 196 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "Issue is Zero coordinate",
 "Issue is Coordinate rounded",
 "Issue is Geodetic datum assumed WGS84",
 "Issue is Coordinate reprojected"
 ]
 },
 "Year 1990-2019",
 "Geometry POLYGON((-105.80419 20.39434,-105.28652 19.17638,-103.04926 17.9671,-102.05082 18.52907,-101.40373 20.27299,-102.03237 21.68854,-103.6779 22.33978,-105.13864 21.73998,-105.80419 20.39434))",
 "TaxonKey is Sturnus vulgaris Linnaeus, 1758",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 196 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038571-181108115102211/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.73v57w
title: Occurrence Download

description: A dataset containing 15 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Scolecenchelys xorae (Smith, 1958)"
 ]
}

 The dataset includes 15 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0059787-220831081235567/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.pm2xq2
title: Occurrence Download

description: A dataset containing 2343 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 }
 ]
 },
 "TaxonKey is Achaetops pycnopygius (P.L.Sclater, 1853)"
 ]
}

 The dataset includes 2343 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010036-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.8bzy4e
title: Occurrence Download

description: A dataset containing 71 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Finland",
 "OccurrenceStatus is Present",
 "TaxonKey is Agriopis aurantiaria (Hübner)",
 "Year 1971-1980"
 ]
}

 The dataset includes 71 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0147912-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.sqqskx
title: Occurrence Download

description: A dataset containing 3115 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen)"
 ]
 }
 }
 ]
 },
 "TaxonKey is Lichmera incana (Latham, 1790)"
 ]
}

 The dataset includes 3115 records from 13 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010030-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.olo46n
title: Occurrence Download

description: A dataset containing 929144 species occurrences available in GBIF matching the query:
{
 "DatasetKey" : [
 "is NatureServe Network Species Occurrence Data"
 ]
}

 The dataset includes 929144 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038572-180508205500799/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.4s8vdw
title: Occurrence Download

description: A dataset containing 133 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Castilleja christii N.H.Holmgren"
 ]
}

 The dataset includes 133 records from 34 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0147913-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.95gxve
title: Occurrence Download

description: A dataset containing 21942 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "Geometry POLYGON((-130.66406 24.74018,-31.28906 24.74018,-31.28906 25.5887,-130.66406 25.5887,-130.66406 24.74018))",
 "Geometry POLYGON((-132.07031 -40.08928,-15.82031 -40.08928,-15.82031 26.85021,-132.07031 26.85021,-132.07031 -40.08928))"
 ]
 },
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "TaxonKey is Jabiru mycteria (Lichtenstein, 1819)"
 ]
}

 The dataset includes 21942 records from 52 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0268574-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.fhga8u
title: Occurrence Download

description: A dataset containing 226 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Ficus pseudopalma Blanco"
 ]
}

 The dataset includes 226 records from 27 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0010043-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.femol0
title: Occurrence Download

description: A dataset containing 3906 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Orlaya grandiflora (L.) Hoffm.",
 "HasCoordinate is TRUE",
 "HasGeospatialIssue is FALSE"
 ]
}

 The dataset includes 3906 records from 79 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0038577-180508205500799/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.qeygg3
title: Occurrence Download

description: A dataset containing 493344 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Phalaris arundinacea L."
 ]
}

 The dataset includes 493344 records from 882 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0268570-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.yxaj8k
title: Occurrence Download

description: A dataset containing 3 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Aquilegia atwoodii S.L.Welsh"
 ]
}

 The dataset includes 3 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0146220-240321170329656/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.kmc3ug
title: Occurrence Download

description: A dataset containing 163 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is United Kingdom of Great Britain and Northern Ireland",
 "TaxonKey is Poecile montanus (Conrad von Baldenstein, 1827)",
 "Year 1975-1975"
 ]
}

 The dataset includes 163 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0188423-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.c7hhne
title: Occurrence Download

description: A dataset containing 92 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Calendula maroccana (Ball) B.D.Jacks."
 ]
}

 The dataset includes 92 records from 22 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0067482-240229165702484/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.unxuvl
title: Occurrence Download

description: A dataset containing 406603 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Potentilla erecta (L.) Räuschel"
 ]
}

 The dataset includes 406603 records from 526 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0032362-190415153152247/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.qfhk7e
title: Occurrence Download

description: A dataset containing 1207162 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON((-78.80493 1.46118,-73.28979 -0.40649,-67.73606 2.04781,-67.55493 3.41675,-67.73606 7.17843,-73.46008 9.34387,-78.05786 8.03101,-78.80493 1.46118))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 "TaxonKey is Tracheophyta"
 ]
}

 The dataset includes 1207162 records from 473 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0210150-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ahouaa
title: Occurrence Download

description: A dataset containing 53 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Tibouchina marumbiensis Wurdack"
 ]
}

 The dataset includes 53 records from 23 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0032363-181108115102211/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.wjujh6
title: Occurrence Download

description: A dataset containing 5 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Campanula lycica Kit Tan & Sorger"
 ]
}

 The dataset includes 5 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0067433-240229165702484/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.gcvfhg
title: Occurrence Download

description: A dataset containing 312626 species occurrences available in GBIF matching the query:
{
 "and" : [
 {
 "or" : [
 "Geometry POLYGON((-132.3366 -52.21444,-25.59279 -52.21444,-25.59279 50.15673,-132.3366 50.15673,-132.3366 -52.21444))",
 "Geometry POLYGON((-118.15111 29.74434,-22.75892 29.74434,-22.75892 35.45284,-118.15111 35.45284,-118.15111 29.74434))",
 "Geometry POLYGON((-119.21289 -3.85093,-63.62063 -3.85093,-63.62063 34.77901,-119.21289 34.77901,-119.21289 -3.85093))"
 ]
 },
 "TaxonKey is Solanum L."
 ]
}

 The dataset includes 312626 records from 623 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0179530-200613084148143/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.13145/bacdive16466.20240510.9
title: Streptomyces artemisiae Zhao et al. 2010

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16467.20240510.9
title: Streptomyces aldersoniae Kumar and Goodfellow 2010

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.15468/dl.muj563
title: Occurrence Download

description: A dataset containing 1151 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Muraenesox cinereus (Forsskål, 1775)"
 ]
}

 The dataset includes 1151 records from 95 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0059913-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.13145/bacdive16468.20240510.9
title: Streptomyces ascomycinicus Kumar and Goodfellow 2010

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16469.20240510.9
title: Streptomyces milbemycinicus Kumar and Goodfellow 2010

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16470.20240510.9
title: Streptomyces wellingtoniae Kumar and Goodfellow 2010

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16471.20240916.9.1
title: Streptomyces iranensis Hamedi et al. 2010

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16472.20240510.9
title: Streptomyces haliclonae Khan et al. 2010

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16473.20240916.9.1
title: Streptomyces marinus Khan et al. 2010

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16474.20240510.9
title: Streptomyces tateyamensis Khan et al. 2010

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16475.20240510.9
title: Streptomyces lacticiproducens Zhu et al. 2011

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16477.20240510.9
title: Streptomyces caeruleatus Zhu et al. 2011

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16478.20240510.9
title: Yinghuangia aomiensis (Nagai et al. 2011) Nouioui et al. 2018

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.15468/dl.vkc5dh
title: Occurrence Download

description: A dataset containing 658 species occurrences available in GBIF matching the query:
{
 "and" : [
 "DatasetKey is EOD – eBird Observation Dataset",
 "GadmGid is NER.5_1",
 "TaxonKey is Passeriformes",
 "Year 1994-2023"
 ]
}

 The dataset includes 658 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0059915-241126133413365/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.13145/bacdive16479.20240916.9.1
title: Streptomyces coacervatus Shibazaki et al. 2011

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16480.20240510.9
title: Streptomyces youssoufiensis Hamdali et al. 2011

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16481.20240916.9.1
title: Streptomyces samsunensis Sazak et al. 2011

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16482.20240510.9
title: Streptomyces sanyensis Sui et al. 2011

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16483.20240510.9
title: Streptomyces rubrus Khan et al. 2011

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16484.20240916.9.1
title: Streptomyces spongiae Khan et al. 2011

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16485.20240916.9.1
title: Streptomyces indicus Luo et al. 2011

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16486.20240510.9
title: Streptomyces sundarbansensis Arumugam et al. 2011

description: The range of data encompasses taxonomy, morphology, physiology, sampling and concomitant environmental conditions as well as molecular biology.
DOI: 10.13145/bacdive16487.20240510.9
title: Streptomyces fildesensis Li et al. 2012

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