A1 (Body Regions)
A3 (Digestive System)
Colon, Ascending
Colon, Descending
Colon, Transverse
Gastrointestinal Tract
Lower Gastrointestinal Tract
Upper Gastrointestinal Tract
A8 (Nervous System)
Glomus Tympanicum
Pedunculopontine Tegmental Nucleus
A9 (Sense Organs)
A10 (Tissues)
A11 (Cells)
BALB 3T3 Cells
Cell Line, Tumor
Cellulosomes
Endothelial Cells
Erythroid Cells
Extracellular Fluid
Granulocyte Precursor Cells
HCT116 Cells
Intracellular Space
Intranuclear Inclusion Bodies
Intranuclear Space
Mesenchymal Stem Cells
NIH 3T3 Cells
Phycobilisomes
Swiss 3T3 Cells
3T3-L1 Cells
A12 (Fluids and Secretions)
A13 (Animal Structures)
A14 (Stomatognathic System)
A15 (Hemic and Immune Systems)
Granulocyte Precursor Cells
Lymphatic Vessels
Serum
B1 (Animals)
Chordata
Haplosporida
Ochlerotatus
B2 (Algae)
Achlya
Algae, Golden-Brown
Aphanomyces
Ascophyllum
Chara
Characeae
Chondrus
Cryptophyta
Cyanophora
Euglena longa
Fucus
Gracilaria
Kelp
Lagenidium
Laurencia
Macrocystis
Nitella
Ochromonas
Peronospora
Plocamium
Porphyra
Porphyridium
Saprolegnia
Sargassum
Scenedesmus
Ulva
Undaria
Volvox
B3 (Bacteria)
Acetobacterium
Achromobacter
Achromobacter cycloclastes
Achromobacter xylosoxidans
Acidaminococcaceae
Acidaminococcus
Acidiphilium
Acidithiobacillus
Actinobacillus equuli
Actinobacillus seminis
Actinobacillus suis
Aeromonadaceae
Alcaligenaceae
Alcaligenes faecalis
Anaerobiospirillum
Anaplasma centrale
Anaplasma marginale
Anaplasma ovis
Azospirillum lipoferum
Bacteroidetes
Bartonella bacilliformis
Beijerinckiaceae
Bilophila
Bordetella avium
Bordetella parapertussis
Bradyrhizobiaceae
Brucella ovis
Brucellaceae
Burkholderia cepacia complex
Burkholderia gladioli
Burkholderia mallei
Burkholderiaceae
Butyrivibrio
Campylobacter hyointestinal
Campylobacter lari
Campylobacter rectus
Campylobacter sputorum
Campylobacter upsaliensis
Cardiobacteriaceae
Cardiobacterium
Caulobacteraceae
Chlorobium
Chloroflexi
Chloroflexus
Chryseobacterium
Citrobacter rodentium
Comamonadaceae
Coxiellaceae
Delftia
Desulfitobacterium
Desulfotomaculum
Desulfovibrio africanus
Desulfovibrio desulfuricans
Desulfovibrio gigas
Desulfuromonas
Ectothiorhodospiraceae
Enterobacter sakazakii
Entomoplasmataceae
Erwinia amylovora
Fibrobacter
Flavobacteriaceae
Flexibacter
Flexibacteraceae
Fusobacteria
Gallionellaceae
Geobacter
Gluconacetobacter
Gluconacetobacter xylinus
Haemophilus paragallinarum
Haemophilus parainfluenzae
Haemophilus paraphrophilus
Haemophilus parasuis
Haemophilus somnus
Halomonadaceae
Halothiobacillus
Helicobacter felis
Helicobacter hepaticus
Helicobacter mustelae
Herbaspirillum
Holosporaceae
Hydrogenophilaceae
Hyphomicrobiaceae
Kluyvera
Legionella longbeachae
Leptothrix
Leptotrichia
Magnetospirillum
Megasphaera
Methylobacteriaceae
Methylocystaceae
Methylophilaceae
Moraxellaceae
Mycoplasma agalactiae
Mycoplasma arthritidis
Mycoplasma bovigenitalium
Mycoplasma bovis
Mycoplasma capricolum
Mycoplasma conjunctivae
Mycoplasma dispar
Mycoplasma gallisepticum
Mycoplasma genitalium
Mycoplasma hyopneumoniae
Mycoplasma hyorhinis
Mycoplasma hyosynoviae
Mycoplasma iowae
Mycoplasma meleagridis
Mycoplasma orale
Mycoplasma ovipneumoniae
Mycoplasma pulmonis
Mycoplasma salivarium
Mycoplasma synoviae
Neisseria cinerea
Neisseria elongata
Neisseria lactamica
Neisseria mucosa
Neisseria sicca
Nitrosomonadaceae
Nitrosomonas europaea
Oceanospirillaceae
Ochrobactrum
Ornithobacterium
Oxalobacteraceae
Paracoccus pantotrophus
Pasteurella pneumotropica
Pectinatus
Pectobacterium
Phytoplasma
Piscirickettsiaceae
Porphyromonas endodontalis
Prevotella nigrescens
Prevotella ruminicola
Propionigenium
Proteus penneri
Pseudomonas alcaligenes
Pseudomonas fragi
Pseudomonas mendocina
Pseudomonas oleovorans
Pseudomonas pseudoalcaligenes
Pseudomonas stutzeri
Pseudomonas syringae
Psychrobacter
Ralstonia
Ralstonia solanacearum
Ralstoniaceae
Rhizobium etli
Rhizobium phaseoli
Rhizobium tropici
Rhodobacteraceae
Rhodocyclaceae
Rhodospirillum centenum
Rhodothermus
Rhodovulum
Roseobacter
Ruminococcus
Serratia liquefaciens
Sinorhizobium fredii
Sphaerotilus
Sphingobacterium
Sphingomonadaceae
Spirillaceae
Spiroplasma citri
Succinivibrionaceae
Taylorella
Thiotrichaceae
Vibrio alginolyticus
Vibrio cholerae non-O1
Vibrio mimicus
Vibrio salmonicida
Wigglesworthia
Xanthomonadaceae
Xanthomonas vesicatoria
Xylella
Yersinia rucker
B4 (Viruses)
Hendra Virus
Henipavirus
Nipah Virus
Porcine Respiratory Coronavirus
SARS Virus
Simian virus 5
B5 (Fungi)
Pneumocystis carinii
Pneumocystis jiroveci
B6 (Plants)
Aegle
Bonamia Plant
Bryophyta
Chrysobalanaceae
Corsiaceae
Dilleniaceae
Dioncophyllaceae
Elaeocarpaceae
Eremophila Plant
Leuzea
Marsileaceae
Ochnaceae
Pinus ponderosa
Pinus sylvestris
Pinus taeda
Polygonum cuspidatum
Rhizophoraceae
Rubia
Sorghum
Sphagnopsida
Stemonaceae
B7 (Archaea)
Acidianus
Aeropyrum
Desulfurococcales
Methanobrevibacter
Pyrobaculum
Pyrococcus abyssi
Pyrococcus horikoshii
Pyrodictiaceae
Thermofilaceae
Thermoproteus
C1 (Bacterial Infections and Mycoses)
Desulfovibrionaceae Infections
Flavobacteriaceae Infections
Flexibacteraceae Infections
Fusobacteriaceae Infections
Moraxellaceae Infections
Piscirickettsiaceae Infections
Pneumonia of Swine, Mycoplasmal
C2 (Virus Diseases)
Avulavirus Infections
Henipavirus Infections
Monkeypox
Severe Acute Respiratory Syndrome
C4 (Neoplasms)
Carcinoma, Ductal
Ganglion Cysts
Glomus Tympanicum Tumor
C5 (Musculoskeletal Diseases)
C6 (Digestive System Diseases)
Acalculous Cholecystitis
Cholecystitis, Acute
Cholecystolithiasis
Choledocholithiasis
Diverticulosis, Colonic
Diverticulosis, Esophageal
Diverticulosis, Stomach
Emphysematous Cholecystitis
Enterocolitis, Neutropenic
Ileus
Intestinal Polyposis
Intestinal Volvulus
Irritable Bowel Syndrome
Steatorrhea
C8 (Respiratory Tract Diseases)
Pneumonia of Swine, Mycoplasmal
Severe Acute Respiratory Syndrome
C14 (Cardiovascular Diseases)
C15 (Hemic and Lymphatic Diseases)
C16 (Congenital, Hereditary, and Neonatal Diseases and Abnormalities)
beta-Mannosidosis
LEOPARD Syndrome
Lymphatic Abnormalities
Mannosidase Deficiency Diseases
Mineralocorticoid Excess Syndrome, Apparent
Persistent Hyperinsulinemia Hypoglycemia of Infancy
Steroid Metabolism, Inborn Errors
C17 (Skin and Connective Tissue Diseases)
Ganglion Cysts
LEOPARD Syndrome
Scleroderma, Diffuse
Scleroderma, Limited
C18 (Nutritional and Metabolic Diseases)
beta-Mannosidosis
Glucose Metabolism Disorders
Malnutrition
Mannosidase Deficiency Diseases
Mineralocorticoid Excess Syndrome, Apparent
Overnutrition
Persistent Hyperinsulinemia Hypoglycemia of Infancy
Steatorrhea
Steroid Metabolism, Inborn Errors
C22 (Animal Diseases)
Monkeypox
Pneumonia of Swine, Mycoplasmal
C23 (Pathological Conditions, Signs and Symptoms)
Chromosomal Instability
Gallstones
Genomic Instability
Intestinal Volvulus
Jaundice, Obstructive
Reticulocytosis
D2 (Organic Chemicals)
Benzeneacetamides
Catenanes
Crown Ethers
Cyclodecanes
Diterpenes, Abietane
Diterpenes, Clerodane
Diterpenes, Kaurane
DNA, Catenated
Flavonolignans
Hemiterpenes
Indolequinones
Norisoprenoids
Rotaxanes
Sesquiterpenes, Eudesmane
Sesquiterpenes, Germacrane
Sesquiterpenes, Guaiane
Taxoids
Tetraoxanes
D3 (Heterocyclic Compounds)
Benzylisoquinolines
Biflavonoids
Corrinoids
Flavanones
Flavonolignans
Flavonols
Indolequinones
Kaempferols
5-Methylcytosine
PQQ Cofactor
Proanthocyanidins
4-Quinolones
Tetrahydroisoquinolines
Tetrapyrroles
Thiazolidinediones
Xanthones
D4 (Polycyclic Hydrocarbons)
5-alpha-Dihydroprogesterone
Diterpenes, Abietane
Phenalenes
Testosterone Propionate
Tetralones
D6 (Hormones, Hormone Substitutes, and Hormone Antagonists)
5-alpha-Dihydroprogesterone
Estradiol Congeners
Estrogenic Steroids, Alkylated
Estrogens, Esterified (USP)
Follicle Stimulating Hormone, Human
Gonadal Hormones
Natriuretic Peptides
Parathyroid Hormone-Related Protein
Progesterone Congeners
Testosterone Congeners
Testosterone Propionate
D8 (Enzymes and Coenzymes)
Acyl-CoA Dehydrogenase
Acyl-CoA Dehydrogenase, Long-Chain
Acyl-CoA Dehydrogenases
Acyl-CoA Oxidase
Adenosylhomocysteinase
Aldehyde Oxidase
Alkane 1-Monooxygenase
1-Alkyl-2-acetylglycerophosphocholine Esterase
3-alpha-Hydroxysteroid Dehydrogenase (B-Specific)
20-alpha-Hydroxysteroid Dehydrogenase
alpha-Mannosidase
Angiostatins
Aryldialkylphosphatase
11-beta-Hydroxysteroid Dehydrogenase Type 1
11-beta-Hydroxysteroid Dehydrogenase Type 2
11-beta-Hydroxysteroid Dehydrogenases
beta-Fructofuranosidase
beta-Mannosidase
Biotinidase
Butyryl-CoA Dehydrogenase
Carboxylesterase
Carboxypeptidase B
Carboxypeptidase C
Carboxypeptidase H
Carboxypeptidases A
CDC2-CDC28 Kinases
CDK9 Protein Kinase
Cellulases
Cellulose 1,4-beta-Cellobiosidase
Cholestenone 5 alpha-Reductase
Cullin Proteins
Cytochrome-B(5) Reductase
Cytochrome b6f Complex
Cytochromes a
Cytochromes a1
Cytochromes a3
Cytochromes b
Cytochromes b6
Cytochromes c
Cytochromes c'
Cytochromes c2
Cytochromes c6
Cytochromes f
Cytosine Deaminase
Deoxyribonuclease (Pyrimidine Dimer)
Deoxyribonuclease IV (Phage T4-Induced)
Dihydrouracil Dehydrogenase (NADP)
DNA Glycosylases
DNA Repair Enzymes
DNA-(Apurinic or Apyrimidinic Site) Lyase
DNA-Formamidopyrimidine Glycosylase
Electron Transport Chain Complex Proteins
Electron Transport Complex I
Electron Transport Complex II
Electron-Transferring Flavoproteins
Endo-1,3(4)-beta-Glucanase
Endo-1,4-beta Xylanases
Enzymes and Coenzymes
Exodeoxyribonuclease V
Fatty Acid Desaturases
Flap Endonucleases
Furin
Glucan 1,3-beta-Glucosidase
Glucan 1,4-beta-Glucosidase
Glucose 1-Dehydrogenase
Glutamate Carboxypeptidase II
Glutamyl Aminopeptidase
GTP-Binding Protein alpha Subunits, G12-G13
GTP-Binding Protein alpha Subunits, Gq-G11
GTP-Binding Protein alpha Subunits
Holliday Junction Resolvases
Inorganic Pyrophosphatase
L-Lactate Dehydrogenase (Cytochrome)
Laccase
Lactase
Lactate Dehydrogenases
Light-Harvesting Protein Complexes
Metalloexopeptidases
Metalloproteases
Methenyltetrahydrofolate Cyclohydrolase
3-Methyl-2-Oxobutanoate Dehydrogenase (Lipoamide)
Methylenetetrahydrofolate Dehydrogenase (NAD+)
Methylenetetrahydrofolate Reductase (NADPH2)
5,10-Methylenetetrahydrofolate Reductase (FADH2)
Methylmalonyl-CoA Decarboxylase
Myosin-Light-Chain Phosphatase
Nucleoside-Triphosphatase
Oxidoreductases Acting on CH-CH Group Donors
Peptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine Amidase
Phosphatidylinositol Diacylglycerol-Lyase
Phosphodiesterase I
Phosphoric Triester Hydrolases
Photosynthetic Reaction Center Complex Proteins
Photosystem I Protein Complex
Photosystem II Protein Complex
PQQ Cofactor
Proprotein Convertase 1
Proprotein Convertase 2
Proprotein Convertase 5
Proprotein Convertases
Receptor, TIE-1
Receptor, TIE-2
Receptors, TIE
Recombinases
Ribonuclease III
Ribonuclease P
RNA, Ribosomal, Self-Splicing
SKP Cullin F-Box Protein Ligases
Steryl-Sulfatase
Thymine DNA Glycosylase
Transposon Resolvases
Ubiquitin Thiolesterase
Ubiquitin-Activating Enzymes
Ubiquitin-Conjugating Enzymes
Ubiquitin-Protein Ligase Complexes
Ubiquitin-Protein Ligases
VDJ Recombinases
Xylan Endo-1,3-beta-Xylosidase
D10 (Lipids)
Fatty Acids, Omega-6
Linoleic Acids, Conjugated
Lipoxins
Prostaglandin H2
Prostaglandins I
Trans Fatty Acids
D11 (Growth Substances, Pigments, and Vitamins)
Angiogenic Proteins
Angiopoietin-1
Angiopoietin-2
Angiopoietins
Angiostatic Proteins
Angiostatins
Endostatins
Parathyroid Hormone-Related Protein
Vascular Endothelial Growth Factor A
Vascular Endothelial Growth Factor B
Vascular Endothelial Growth Factor C
Vascular Endothelial Growth Factor D
Vascular Endothelial Growth Factor, Endocrine-Gland-Derived
Vascular Endothelial Growth Factors
D12 (Amino Acids, Peptides, and Proteins)
Acyl-CoA Dehydrogenase
Acyl-CoA Dehydrogenase, Long-Chain
Acyl-CoA Oxidase
Angiogenic Proteins
Angiopoietin-1
Angiopoietin-2
Angiopoietins
Angiostatic Proteins
Angiostatins
beta-Transducin Repeat-Containing Proteins
Butyryl-CoA Dehydrogenase
CDC2-CDC28 Kinases
CDK9 Protein Kinase
Collagen Type XVIII
Cullin Proteins
Cytochrome-B(5) Reductase
Cytochrome b6f Complex
Cytochromes a
Cytochromes a1
Cytochromes a3
Cytochromes b
Cytochromes b6
Cytochromes c
Cytochromes c'
Cytochromes c2
Cytochromes c6
Cytochromes f
Electron Transport Complex I
Electron Transport Complex II
Electron-Transferring Flavoproteins
Endostatins
F-Box Proteins
Galanin-Like Peptide
GTP-Binding Protein alpha Subunits, G12-G13
GTP-Binding Protein alpha Subunits, Gq-G11
GTP-Binding Protein alpha Subunits
GTP-Binding Protein beta Subunits
GTP-Binding Protein gamma Subunits
Inorganic Pyrophosphatase
Light-Harvesting Protein Complexes
Methylenetetrahydrofolate Reductase (NADPH2)
Nanotubes, Peptide
Oligoclonal Bands
Parathyroid Hormone-Related Protein
Photosynthetic Reaction Center Complex Proteins
Photosystem I Protein Complex
Photosystem II Protein Complex
Positive Transcriptional Elongation Factor B
Pregnancy-Associated alpha 2-Macroglobulins
Receptor, Adenosine A1
Receptor, Adenosine A2A
Receptor, Adenosine A2B
Receptor, Adenosine A3
Receptor, Anaphylatoxin C5a
Receptor, Angiotensin, Type 1
Receptor, Angiotensin, Type 2
Receptor, Bradykinin B1
Receptor, Bradykinin B2
Receptor, Cannabinoid, CB1
Receptor, Cannabinoid, CB2
Receptor, Endothelin B
Receptor, Galanin, Type 1
Receptor, Galanin, Type 2
Receptor, Galanin, Type 3
Receptor, Melanocortin, Type 1
Receptor, Melanocortin, Type 2
Receptor, Melanocortin, Type 3
Receptor, Melanocortin, Type 4
Receptor, Melatonin, MT1
Receptor, Melatonin, MT2
Receptor, Muscarinic M1
Receptor, Muscarinic M2
Receptor, Muscarinic M3
Receptor, Muscarinic M4
Receptor, PAR-1
Receptor, PAR-2
Receptor, Parathyroid Hormone, Type 1
Receptor, Parathyroid Hormone, Type 2
Receptor, Serotonin, 5-HT2A
Receptor, Serotonin, 5-HT2C
Receptor, Serotonin, 5-HT2B
Receptor, TIE-1
Receptor, TIE-2
Receptor, Cholecystokinin A
Receptor, Cholecystokinin B
Receptor, Endothelin A
Receptor, Muscarinic M5
Receptors, Adenosine A2
Receptors, Serotonin, 5-HT1
Receptor, Serotonin, 5-HT1A
Receptor, Serotonin, 5-HT1B
Receptor, Serotonin, 5-HT1D
Receptors, Serotonin, 5-HT2
Receptors, Serotonin, 5-HT3
Receptors, Serotonin, 5-HT4
Receptors, Thromboxane A2, Prostaglandin H2
Receptors, Calcium-Sensing
Receptors, Cannabinoid
Receptors, Epoprostenol
Receptors, Formyl Peptide
Receptors, G-Protein-Coupled
Receptors, Galanin
Receptors, Lipoxin
Receptors, Melanocortin
Receptors, Melatonin
Receptors, Pheromone
Receptors, Proteinase-Activated
Receptors, TIE
Ribonuclease P
S-Phase Kinase-Associated Proteins
Vascular Endothelial Growth Factor A
Vascular Endothelial Growth Factor B
Vascular Endothelial Growth Factor C
Vascular Endothelial Growth Factor D
Vascular Endothelial Growth Factor, Endocrine-Gland-Derived
Vascular Endothelial Growth Factors
D13 (Nucleic Acids, Nucleotides, and Nucleosides)
DNA, A-Form
DNA, C-Form
DNA, Catenated
DNA, Concatenated
DNA, Cruciform
DNA, Z-Form
RNA, Ribosomal, Self-Splicing
D17 (Anti-Inflammatory Agents, Antirheumatic Agents, and Inflammation Mediators)
Prostaglandin H2
Prostaglandins I
D18 (Cardiovascular Agents)
Endothelium-Dependent Relaxing Factors
D20 (Complex Mixtures)
D24 (Immunologic and Biological Factors)
Antibodies, Phospho-Specific
Oligoclonal Bands
Receptor, Anaphylatoxin C5a
D27 (Chemical Actions and Uses)
Anabolic Agents
Angiogenesis Inducing Agents
Angiogenesis Modulating Agents
Anti-Retroviral Agents
Emulsifying Agents
Endocannabinoids
Endothelium-Dependent Relaxing Factors
Molecular Mechanisms of Action
Natriuretic Agents
Physiological Effects of Drugs
Therapeutic Uses
E1 (Diagnosis)
Biopsy, Fine-Needle
Early Diagnosis
Microdissection
Neuroendoscopy
Ovulation Prediction
Retinoscopy
Tomography, Optical
Tomography, Optical Coherence
E2 (Therapeutics)
Continuous Positive Airway Pressure
Contraception, Barrier
Contraception, Postcoital
Nutrition Therapy
Ovulation Prediction
E4 (Surgical Procedures, Operative)
Biopsy, Fine-Needle
Cervicoplasty
Mesenchymal Stem Cell Transplantation
Microdissection
Neuroendoscopy
E5 (Investigative Techniques)
Deuterium Exchange Measurement
Microdissection
Microfluidics
Ovulation Prediction
Rotarod Performance Test
Vaginal Douching
E6 (Dentistry)
E7 (Equipment and Supplies)
Flowmeters
Microbubbles
Neuroendoscopes
Quantum Dots
Retinoscopes
F1 (Behavior and Behavior Mechanisms)
Adolescent Development
Reproductive Behavior
F2 (Psychological Phenomena and Processes)
F4 (Behavioral Disciplines and Activities)
G1 (Biological Sciences)
G2 (Health Occupations)
Regenerative Medicine
Toxicogenetics
G3 (Environment and Public Health)
Biodiversity
Hot Springs
Rivers
G4 (Biological Phenomena, Cell Phenomena, and Immunity)
Chromatin Assembly and Disassembly
Chromosome Positioning
Cross-Priming
DNA Packaging
G5 (Genetic Processes)
Chromatin Assembly and Disassembly
DNA Packaging
DNA Repeat Expansion
DNA Replication Timing
Epigenesis, Genetic
G6 (Biochemical Phenomena, Metabolism, and Nutrition)
DNA Repeat Expansion
F-Box Motifs
Genomic Islands
Histone Code
Matrix Attachment Regions
G7 (Physiological Processes)
Adolescent Development
Lymphangiogenesis
Musculoskeletal Development
G8 (Reproductive and Urinary Physiology)
G9 (Circulatory and Respiratory Physiology)
Blood Physiologic Phenomena
Blood Physiologic Processes
Cardiovascular Physiologic Phenomena
Cardiovascular Physiologic Processes
Exhalation
Hemodynamic Phenomena
Respiratory Physiologic Phenomena
Respiratory Physiologic Processes
Reticulocytosis
G11 (Musculoskeletal, Neural, and Ocular Physiology)
Musculoskeletal Development
Musculoskeletal Physiologic Phenomena
Musculoskeletal Physiologic Processes
Ocular Physiologic Phenomena
Ocular Physiologic Processes
G12 (Chemical and Pharmacologic Phenomena)
G13 (Genetic Phenomena)
Chromosomal Instability
DNA Repeat Expansion
Genomic Instability
G14 (Genetic Structures)
Chromosome Fragile Sites
DNA Repeat Expansion
DNA Sequence, Unstable
Genes, Transgenic, Suicide
Genomic Islands
Histone Code
Matrix Attachment Regions
H1 (Natural Sciences)
Microfluidics
Phase Transition
Toxicogenetics
Transition Temperature
I1 (Social Sciences)
Forensic Ballistics
Forensic Sciences
Human Rights Abuses
J1 (Technology, Industry, and Agriculture)
Microfluidics
Nanotubes
Nanotubes, Peptide
J2 (Food and Beverages)
Cultured Milk Products
Infant Formula
Milk Substitutes
Soy Foods
Soy Milk
L1 (Information Science)
M1 (Persons)
African Continental Ancestry Group
American Native Continental Ancestry Group
Asian Continental Ancestry Group
Continental Population Groups
European Continental Ancestry Group
Oceanic Ancestry Group
Population Groups
N1 (Population Characteristics)
Z1 (Geographic Locations)
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