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National Library of Medicine Listing (4268)
- QS Anatomy (21)
  - QS 4 General works. Classify here works on regional anatomy (8)
  - QS 18 Education (3)
  - Histology (8)
    - QS 530 Experimental histology (1)
    - QS 532 Types of normal tissue (1)
    - QS 532.5.E7 Epithelium (6)
  - Embryology (2)
    - QS 675 Congenital abnormalities (1)
    - QS 638 Sex determination (Genetics). Sex preselection (1)
- QT Physiology (18)
  - QT 4 General works, including comparative physiology (1)
  - Human Physiology (17)
    - QT 104 General works (1)
    - QT 140 Environmental exposure. Physiological adaptation (10)
    - QT 150 Hot climates (3)
    - QT 160 Cold Temperature (1)
    - QT 162 Other environmental factors acting on human physiology (2)
  - Physiology. Hygiene (6)
    - QT 230 Lighting. Air. Sunlight. Living space (6)
- QU Biochemistry (560)
  - QU 4 General works (13)
  - QU 26.5 Informatics. Automatic data processing. Computers (15)
  - Proteins. Amino Acids. Peptides (125)
    - QU 55 Proteins (34)
    - QU 58 Nucleic acids and derivatives (General) (3)
    - QU 58.5 DNA. (65)
    - QU 58.7 RNA (20)
    - QU 68 Peptides (8)
  - Carbohydrates. Lipids (10)
    - QU 75 Carbohydrates (5)
    - QU 85 Lipids (5)
  - Biochemistry of the Human Body (11)
    - QU 100 Body composition (3)
    - QU 107 Growth substances (3)
    - QU 120 Metabolism (2)
    - QU 130.5 Trace elements (3)
  - Enzymes (37)
    - QU 140 Oxidoreductases (5)
    - QU 135 Enzymes (16)
    - QU 136 Hydrolases (9)
    - QU 138 Ligases (1)
    - QU 141 Transferases (4)
    - QU 143 Enzyme inhibitors (5)
  - Vitamins (19)
    - QU 145 Nutrition. Nutritional requirements (12)
    - QU 145.5 Nutritive values of food (3)
    - QU 146 Nutritional surveys (1)
    - QU 160 Vitamins. Vitamin requirements (5)
    - QU 188 Folic acid (3)
    - QU 194 Vitamin B12 (1)
  - Cells and Genetics (93)
    - QU 300 General works (17)
    - QU 350 Cellular structures (48)
    - QU 375 Cell physiology (34)
  - Genetics (340)
    - QU 450 General Works (81)
    - QU 460 Genomics. Proteomics (56)
    - QU 470 Genetic structures (110)
    - QU 475 Genetic processes (58)
    - QU 500 Genetic phenomena (71)
    - QU 550 Genetic techniques. PCR. Chromosome mapping (25)
- QV Pharmacology (601)
  - QV 4 General works (37)
  - QV 34 Experimental pharmacology (General) (36)
  - QV 38 Drug action. (217)
  - QV 55 Pharmaceutical preparations (General) (6)
  - QV 56 Adverse effects (General) (7)
  - Water. Electrolytes (1)
    - QV 270 Water. Inorganic ions. Electrolytes (1)
  - Dermatologic Agents. Gastrointestinal Agents (3)
    - QV 60 Dermatologic agents (1)
    - QV 66 Gastrointestinal agents (1)
    - QV 71 Antidiarrheals (1)
  - Central Nervous System Agents. Local Anesthetics (4)
    - QV 85 Hypnotics. Sedatives. Anticonvulsants (2)
    - QV 89 Opioid analgesics. Narcotics. Narcotic antagonists (1)
    - QV 95 Anti-inflammatory analgesics. Non-narcotic analgesics (1)
  - Autonomic Agents. Nonmetallic Elements. Neuromuscular Agents (6)
    - QV 126 Neurotransmitters (1)
    - QV 137 Nicotine (5)
  - Cardiovascular Agents. Renal Agents (3)
    - QV 150 Cardiovascular agents (3)
  - Reproductive Control Agents (1)
    - QV 177 Contraceptives (1)
  - Hematologic Agents (11)
    - QV 180 Hematologic agents (1)
    - QV 181 Hematinics (1)
    - QV 183 Iron. Iron compounds (10)
  - Local Anti-Infective Agents. Dyes. Tars (1)
    - QV 220 Local anti-infective agents. Disinfectants (1)
  - Anti-Inflammatory Agents. Anti-Infective Agents. Antineoplastic Agents (313)
    - QV 247 Anti-inflammatory agents (2)
    - QV 250 Anti-infective agents (General) (18)
    - QV 252 Antifungal agents. Antifungal antibiotics (11)
    - QV 253 Anthelmintics (20)
    - QV 254 Antiprotozoal agents (General) (8)
    - QV 256 Antimalarials (228)
    - QV 257 Cinchona and its derivatives (2)
    - QV 258 Primaquine. Quinacrine (6)
    - QV 268 Antitubercular agents. Antitubercular antibiotics (11)
    - QV 268.5 Antiviral agents (General) (24)
    - QV 269 Antineoplastic agents. Antineoplastic antibiotics (3)
  - Anti-Bacterial Agents. Tissue Extracts (22)
    - QV 350 Anti-bacterial agents (General or not elsewhere classified) (15)
    - QV 350.5 Specific drugs, A-Z (1)
    - QV 350.5.C5 Chloramphenicol (1)
    - QV 350.5.G3 Gentamicins (2)
    - QV 354 Penicillins (3)
    - QV 360 Tetracyclines (3)
  - Toxicology (46)
    - General Toxicology (46)
      - QV 600 General works (25)
      - QV 601 Antidotes and other therapeutic measures (21)
      - QV 602 Detection of poisons. Tests. Laboratory manuals. Technique (10)
  - Drug Standardization. Pharmacognosy. Medicinal Plants (102)
    - QV 744 Pharmaceutical chemistry (5)
    - QV 748 Prescription writing. Dosage. Dosage calculations (10)
    - QV 766 Medicinal plants (General) (6)
    - QV 771 Standardization and evaluation of drugs (83)
    - QV 772 Non-prescription drugs (2)
  - Pharmaceutical Processes. Packaging. Labeling (3)
    - QV 778 Pharmaceutical processes (2)
    - QV 785 Types of pharmaceutical preparations. Dosage forms (1)
- QW Microbiology and Immunology (634)
  - QW 4 General works. Classify here works on microbiology as a whole. (16)
  - QW 45 Microbial drug resistance. General or not elsewhere classified. (161)
  - QW 50 Bacteria (General). Bacteriology. Archaea (28)
  - QW 51 Morphology and variability of microorganisms. Microbial genetics. (18)
  - QW 52 Physiology and chemistry of microorganisms. Metabolism. (16)
  - Environmental Microbiology (5)
    - QW 55 Environmental microbiology (2)
    - QW 70 Veterinary microbiology (3)
  - Bacteria (38)
    - QW 125 Actinibacteria, Actinomycetales. (8)
    - QW 127 Gram-positive endospore forming bacteria. (1)
    - QW 131 Gram-negative bacteria. (2)
    - QW 138 Enterobacteriaceae (10)
    - QW 142 Gram-positive bacteria (General) (2)
    - QW 150 Proteobacteria. Rickettsiaceae, Wolbachia (14)
    - QW 154 Campylobacter. Helicobactor. (2)
  - Viruses (41)
    - QW 160 Viruses (General). Virology (40)
    - QW 162 Insect viruses (2)
  - Fungi. Pathogenic Fungi. (4)
    - QW 180 Pathogenic Fungi (4)
  - Reference Works. General Immunology (27)
    - QW 504 General works (4)
    - QW 520 Research (General) (23)
  - Immunity by Type (79)
    - QW 541 Natural immunity. Immunogenetics (22)
    - QW 545 Autoimmunity (3)
    - QW 551 Acquired immunity. Artificial immunity (13)
    - QW 552 Active immunity (1)
    - QW 553 Maternally acquired immunity (5)
    - QW 563 Local immunity (4)
    - QW 568 Cellular immunity. Immunologic cytotoxicity. Immunocompetence. Immunologic factors (General) (46)
  - Antigens and Antibodies. Toxins and Antitoxins (114)
    - QW 570 Serology. (8)
    - QW 573 Antigens (17)
    - QW 575 Antibodies (62)
    - QW 630 Toxins. Antitoxins (38)
  - Immune Responses (104)
    - QW 640 Agglutination. Precipitation (4)
    - QW 700 Infection. Mechanisms of infection and resistance. (100)
    - QW 730 Virulence. Invasiveness (2)
  - Immunotherapy and Hypersensitivity (140)
    - QW 800 Biological products producing immunity (11)
    - QW 805 Vaccines. Antitoxins. Toxoids (83)
    - QW 806 Vaccination (55)
    - QW 900 Anaphylaxis and hypersensitivity. Allergens (5)
    - QW 920 Immunosuppression. Immunosuppressive agents (5)
- QX Parasitology (1460)
  - QX 4 General works (46)
  - QX 15 Classification. Terminology (7)
  - QX 19 Schools, departments, and faculties of parasitology. (4)
  - QX 20 Research (General) (102)
  - QX 45 Host-parasite relations (70)
  - Protozoa (432)
    - QX 50 Protozoa (26)
    - QX 55 Sarcodina (Amoebae) (2)
    - QX 70 Mastigophora. (e.g., Giardia. Trichomonas. Trypanosoma. Leishmania) (81)
    - QX 123 Apicomplexa (11)
    - QX 135 Plasmodia (328)
    - QX 140 Toxoplasma (1)
  - Helminths. Annelida (242)
    - QX 200 Helminths (55)
    - QX 203 Nematoda (65)
    - QX 207 Trichuroidea (5)
    - QX 243 Strongyloidea (5)
    - QX 277 Ascaroidea (10)
    - QX 301 Filarioidea (65)
    - QX 353 Trematoda (7)
    - QX 355 Schistosoma (40)
    - QX 365 Fasciola (14)
    - QX 400 Cestoda (3)
    - QX 442 Echinococcus (2)
    - QX 451 Annelida (1)
  - Arthropods (18)
    - QX 460 Arthropods (7)
    - QX 473 Acari (2)
    - QX 475 Sarcoptidae (Mites) (e.g., Sarcoptes scabiei) (2)
    - QX 479 Ticks (10)
  - Insects. Other Parasites (853)
    - QX 500 Insects (6)
    - QX 501 Lice (1)
    - QX 503 Hemiptera (e.g., Bedbugs) (15)
    - QX 505 Diptera (121)
    - QX 510 Mosquitoes (240)
    - QX 515 Anopheles (337)
    - QX 525 Aedes (109)
    - QX 530 Culex (34)
    - QX 555 Coleoptera (Beetles) (2)
    - QX 560 Lepidoptera (Moths. Butterflies) (1)
    - QX 565 Hymenoptera (Bees. Wasps. Ants) (6)
    - QX 570 Orthoptera (e.g., Grasshoppers) (2)
    - QX 600 Insect control. Tick control (426)
    - QX 650 Insect vectors (358)
    - QX 675 Mollusca (10)
- QY Clinical Pathology (165)
  - QY 4 General works (42)
  - QY 25 Laboratory techniques and procedure (33)
  - Diagnostic Tests (61)
    - QY 120 Sputum (26)
    - QY 125 Saliva (2)
    - QY 140 Liver tests (1)
    - QY 160 Feces (10)
    - QY 185 Urinalysis (9)
    - QY 250 Immunodiagnostic tests (18)
  - Blood. Blood Chemistry (47)
    - QY 400 General works (20)
    - QY 402 Cellular elements (6)
    - QY 408 Physical examination (4)
    - QY 410 Coagulation (4)
    - QY 450 Blood chemistry (14)
    - QY 490 Enzymes (1)
- QZ Pathology (47)
  - QZ 4 General works (3)
  - QZ 35 Postmortem examination (8)
  - Pathogenesis. Etiology (17)
    - QZ 40 Pathogenesis. Etiology (16)
    - QZ 53 Pathogenesis. Age or sex factors (1)
  - Manifestations of Disease (15)
    - QZ 140 General manifestations of disease (15)
      - QZ 150 Local reactions to injury and disease (10)
  - Neoplasms. Cysts (8)
    - QZ 200 Neoplasms. Cysts (General) (8)
- W General Medicine. Health Professions (409)
  - W 1-28 Reference works (1)
  - W 20.5 Biomedical research (22)
  - W 20.55.V4 Veterinary biomedical research (12)
  - W 21 Medicine as a profession. (18)
  - W 21.5 Allied health personnel. Allied health professions (53)
  - W 26.5 Informatics. Health informatics (23)
  - W 50 Medical ethics (9)
  - W 74 Medical economics. Health care costs (17)
  - W 82 Biomedical technology (General) (8)
  - W 83 Telemedicine (General) (14)
  - Health Services. Patients and Patient Advocacy (273)
    - W 84 Health services. Delivery of health care (183)
    - W 84.4 Quality of Health Care (10)
    - W 85 Patients. Attitude and compliance (110)
  - Professional practice (29)
    - W88 Administrative work. Teaching. Research (29)
- WA Public Health (2051)
  - WA 4 Works on general hygiene (7)
  - WA 18 Education (10)
  - WA 19 Schools, colleges, and specialized departments and facilities (4)
  - WA 20.5 Research (General) (185)
  - WA 30 Socioeconomic factors in public health (General) (463)
  - WA 55 Registration of notifiable diseases (1)
  - WA 100 General works (76)
  - WA 105 Epidemiology (127)
  - Preventive Medicine (749)
    - WA 108 Preventive health services. Preventive medicine. Travel Medicine. (101)
    - WA 110 Prevention and control of communicable diseases. Transmission of infectious diseases (521)
    - WA 115 Immunization (29)
    - WA 240 Disinfection. Disinfestation. Pesticides (including diseases caused by) (268)
    - WA 243 Diagnositic services (26)
  - Accident and Injury Prevention. Disasters (15)
    - WA 250 General works (7)
    - WA 295 Disasters. Disaster medicine. Rescue work. Terrorism (9)
  - Health Problems of Special Population Groups (1005)
    - WA 300 General. Refugees (12)
    - WA 305 Mental health of special population groups (12)
    - WA 309 Women's health (76)
    - WA 310 Maternal welfare (239)
    - WA 320 Child Welfare. Child Health Services. (38)
    - WA 325 Child Abuse (1)
    - WA 360 Veterans health (5)
    - WA 395 Health in developing countries (789)
  - Health Administration and Organization (317)
    - WA 525 General works (125)
    - WA 530 International health administration (68)
    - WA 540 National and state health administration (55)
    - WA 546 Local Health Administration. Community Health Services (71)
    - WA 550 Family planning (11)
    - WA 590 Health education, Health communication (33)
  - Sanitation. Environmental Control (17)
    - General Sanitation and Environmental Control (17)
      - WA 670 General works (17)
  - Water (7)
    - WA 675 Water. Water supply. Sources (7)
  - Food (1)
    - WA 695 Food. Food supply. Food inspection (1)
  - Drugs. Cosmetics (1)
    - WA 730 Drugs. Drug adulteration and contamination. (1)
  - Air pollution (23)
    - WA 750 Air sanitation and hygiene (4)
    - WA 754 Pollution and pollutants (incl. tobacco pollution; passive smoking) (22)
  - Waste (1)
    - WA 778 Waste products. Waste disposal (1)
  - Housing. Buildings. Public Facilities (7)
    - WA 795 Housing (6)
    - WA 799 Public buildings (1)
  - Statistics. Surveys (149)
    - WA 900 Public health statistics (66)
    - WA 950 Theory or methods of medical statistics. Epidemiologic methods (94)
- WB Practice of Medicine (433)
  - WB 25 Technique of research in internal medicine (3)
  - WB 26 Equipment and supplies (2)
  - Traditional medicine (2)
    - WB 55.A9 Ayurvedic medicine (1)
  - WB 60 Bioethics. Clinical ethics. Clinical ethics committees (1)
  - WB 100 General works (4)
  - WB 102 Clinical medicine (2)
  - WB 102.5 Clinical medicine - evidence-based practice (6)
  - WB 105 Emergency medicine. Medical emergencies (3)
  - Diagnosis (124)
    - General Diagnosis (124)
      - WB 141 General works (91)
      - WB 143 Signs and symptoms (11)
      - WB 152 Chills. Fever (7)
      - WB 200 Physical diagnosis (General) (21)
      - WB 290 Medical history taking (5)
      - WB 293 Collections of clinical case reports (3)
  - Therapeutics (134)
    - WB 300 General works (12)
    - WB 305 Instructions or non-drug prescriptions for devices or therapy (General) (4)
    - WB 325 Aftercare (2)
    - WB 327 Self care (3)
    - WB 330 Drug therapy (60)
    - WB 340 Drug Administration (28)
    - WB 356 Blood transfusion (33)
    - WB 377 Spinal, cisternal and ventricular puncture (3)
    - WB 379 Biopsy (1)
    - WB 381 Phlebotomy. Bloodletting. Leeching (1)
    - WB 460 Physical medicine. Physical therapy (2)
  - Medical Climatology (179)
    - WB 700 Medical climatology. Geography of disease (50)
    - WB 710 Diseases of geographic areas (141)
    - WB 720 Diseases of ethnic groups (General or not elsewhere classified) (2)
    - WB 890 Complementary therapies (1)
- WC Communicable Diseases (2353)
  - WC 11 History (General) (2)
  - WC 15 Classification of infectious diseases (1)
  - WC 20 Research (General) (57)
  - Isolation and quarantine hospitals. Clinics, dispensaries, etc. Leper colonies (4)
    - WC 27.1 General coverage (1)
    - WC 28 Individual (2)
    - WC 39 Handbooks. Resource guides (1)
    - WC 100 General works (1)
  - Sexually Transmitted Diseases (36)
    - WC 140 Sexually transmitted diseases (16)
    - WC 142 Public health control measures (15)
    - WC 144 Prevention (2)
    - WC 150 Gonorrhea (1)
    - WC 160 Syphilis (10)
  - Infection. Bacterial Infections (259)
    - General Infection (9)
      - WC 195 Infection. Cross infection. Laboratory infection (9)
    - Bacterial Infections (147)
      - WC 200 Bacterial infections (General or not elsewhere classified) (13)
      - WC 202 Pneumonia (General or not elsewhere classified) (28)
      - WC 204 Pneumococcal pneumonia. Staphylococcal pneumonia (18)
      - WC 210 Streptococcal infections (General or not elsewhere classified) (19)
      - WC 217 Pneumococcal infections (52)
      - WC 220 Rheumatic fever. Chorea in rheumatic fever (1)
      - WC 240 Bacteremia. Sepsis. Toxemias (19)
      - WC 245 Meningococcal infections (32)
      - WC 250 Staphylococcal infections (2)
    - Enteric Infections (60)
      - WC 260 Enterobacteriaceae and other enteric infections (5)
      - WC 262 Cholera (7)
      - WC 264 Epidemics (3)
      - WC 266 Paratyphoid fevers (5)
      - WC 268 Bacterial food poisoning (1)
      - WC 269 Salmonella infections (19)
      - WC 270 Typhoid fever (21)
      - WC 280 Dysentery (1)
      - WC 282 Bacillary dysentery (1)
      - WC 285 Amebic dysentery. Amebiasis (2)
      - WC 290 Escherichia coli infections (7)
    - Other Bacterial Infections. Zoonotic Bacterial Infections (47)
      - WC 302 Actinomycetales infections. Mycobacterium infections (8)
      - WC 305 Anthrax (2)
      - WC 310 Brucellosis (7)
      - WC 330 Pseudomonas infections. Glanders (2)
      - WC 335 Leprosy (10)
      - WC 355 Epidemics (1)
      - WC 368 Clostridium infections (6)
      - WC 370 Tetanus. Trismus (5)
      - WC 406 Borrelia infections. Lyme disease (2)
      - WC 410 Relapsing fever (5)
      - WC 420 Leptospirosis. Weil disease (1)
      - WC 422 Treponemal infections (1)
      - WC 425 Yaws (1)
  - Mycoses (7)
    - WC 450 Mycoses (General or not elsewhere classified) (1)
    - WC 465 Histoplasmosis (2)
    - WC 475 Cryptococcosis. Sporotrichosis (4)
  - Virus Diseases (616)
    - General Virus Diseases (11)
      - WC 500 Virus diseases (General or not elsewhere classified) (11)
    - General RNA Virus Infections (22)
      - WC 501 RNA virus infections (General or not elsewhere classified) (22)
      - WC 502 Retroviridae infections (General or not elsewhere classified) (1)
    - Acquired Immunodeficiency Syndrome. HIV Infections (380)
      - WC 503 Acquired immunodeficiency syndrome. HIV infections (274)
      - WC 503.1 Diagnosis (44)
      - WC 503.2 Therapy (71)
      - WC 503.3 Etiology. Transmission (12)
      - WC 503.4 Epidemiology (22)
      - WC 503.41 General coverage (10)
      - WC 503.5 Complications (121)
      - WC 503.6 Prevention and control (38)
      - WC 503.7 Psychosocial aspects (25)
    - Viral Respiratory Tract Infections. Respirovirus Infections (23)
      - WC 505 Viral respiratory tract infections (8)
      - WC 510 Common cold (1)
      - WC 515 Human influenza (14)
    - Infectious Mononucleosis. Arbovirus Infections (119)
      - WC 522 Infectious mononucleosis (1)
      - WC 524 Arbovirus infections (16)
      - WC 528 Dengue (99)
      - WC 530 Yellow fever (7)
      - WC 532 Epidemics (1)
    - Viral Hemorrhagic Fevers. Other Virus Diseases (62)
      - WC 534 Viral hemorrhagic fevers (33)
      - WC 536 Human viral hepatitis (17)
      - WC 542 Arbovirus encephalitis. Equine encephalomyelitis (in humans) (7)
      - WC 550 Rabies (2)
      - WC 555 Poliomyelitis (2)
      - WC 556 Prevention and control (4)
    - Infectious Viral Skin Diseases (10)
      - WC 571 Herpesviridae infections (2)
      - WC 575 Herpes zoster (1)
      - WC 578 Herpes simplex (2)
      - WC 580 Measles (5)
      - WC 582 Rubella (1)
      - WC 585 Smallpox (1)
      - WC 588 Prevention and control (1)
  - Rickettsiaceae Infections. Chlamydiaceae Infections (12)
    - WC 600 Rickettsiaceae infections. Chlamydiaceae infections. Tick-borne diseases (10)
    - WC 625 Other tick-borne rickettsial infections (2)
    - WC 630 Scrub typhus (2)
    - WC 635 Other mite-borne rickettsial infections (1)
  - Tropical and Parasitic Diseases (1576)
    - WC 680 Tropical diseases (General) (150)
    - WC 695 Parasitic diseases (General) (65)
    - WC 698 Parasitic intestinal diseases (General) (11)
    - WC 700 Protozoan infections (General) (9)
    - WC 705 Trypanosomiasis (79)
    - WC 715 Visceral leishmaniasis (67)
    - WC 725 Toxoplasmosis (General) (1)
    - WC 730 Coccidiosis (3)
    - WC 750 Malaria (807)
    - WC 755 Epidemiology (63)
    - WC 755.1 General coverage (16)
    - WC 765 Prevention and control (344)
    - WC 770 Therapy (124)
    - WC 800 Helminthiasis (21)
    - WC 805 Trematode infections (General) (6)
    - WC 810 Schistosomiasis (87)
    - WC 830 Cestode infections (General) (4)
    - WC 838 Cysticercosis. Taeniasis (2)
    - WC 840 Echinococcosis (3)
    - WC 850 Nematode infections (General) (25)
    - WC 855 Trichinosis (1)
    - WC 860 Trichuriasis. Oxyuriasis (7)
    - WC 865 Strongyloidiasis (8)
    - WC 870 Ascariasis (12)
    - WC 880 Filariasis and related conditions (General) (180)
    - WC 885 Onchocerciasis (80)
    - WC 890 Hookworm infections (General) (9)
    - WC 900 Ectoparasitic infestations, disinfestation (General) (4)
    - WC 950 Zoonoses (General) (12)
- WD Disorders of Systemic, Metabolic or Environmental Origin, etc (224)
  - Nutrition Disorders (43)
    - WD 100 General works (19)
    - WD 105 Deficiency diseases (33)
  - Metabolic Diseases (8)
    - General Metabolic Diseases (8)
      - WD 200 General works (7)
      - WD 320 Drug hypersensitivity (1)
  - Animal Poisons (155)
    - WD 400 General works (21)
    - WD 401 Handbooks. Resource guides (1)
    - WD 405 Marine forms (6)
    - WD 410 Reptiles (147)
    - WD 420 Spiders. Scorpions. Centipedes. Leeches (5)
    - WD 430 Insects (1)
  - Disorders and Injuries of Environmental Origin (21)
    - WD 600 General works (21)
- WE Musculoskeletal System (11)
  - WE 20 Research (General) (1)
  - WE 100 General works (1)
  - WE 140 Diseases (General) (4)
  - WE 800 Extremities (6)
    - WE 850 Lower extremity. Hip. Leg. Foot. (5)
    - WE 870 Knee. Lower leg (2)
- WF Respiratory System (405)
  - WF 20 Research (General) (39)
  - WF 100 General works (13)
  - WF 140 Diseases of the respiratory system (General) (79)
  - Tuberculosis (305)
    - WF 200 Tuberculosis (General) (211)
    - WF 205 Epidemiology (36)
    - WF 205.1 General coverage (12)
    - WF 215 Pathology (6)
    - WF 220 Diagnosis. Prognosis (114)
    - WF 225 Mass chest X-ray (2)
    - WF 250 Immunological aspects (10)
    - WF 290 Lymph node tuberculosis. Scrofula (1)
    - WF 300 Pulmonary tuberculosis (49)
    - WF 310 Therapy (30)
    - WF 315 Diet. Rest. Exercise. Home care (6)
    - WF 330 Hospitalization. Climatotherapy. Heliotherapy (2)
    - WF 350 Surgery (2)
    - WF 360 Drug therapy (43)
    - WF 380 Miliary tuberculosis (1)
    - WF 390 Pleural tuberculosis (3)
    - WF 405 Tuberculosis in the workplace (1)
    - WF 415 Tuberculosis in childhood (23)
  - Lungs (20)
    - WF 600 Lungs (20)
- WG Cardiovascular System (51)
  - WG 20 Research (General) (19)
  - WG 100 General works (10)
  - WG 120 Cardiovascular diseases (21)
  - Heart. Heart Diseases (24)
    - WG 200 General works (24)
- WH Hemic and Lymphatic Systems (284)
  - WH 20 Research (General) (14)
  - WH 100 General works (22)
  - Hematologic Diseases. Immunologic Factors. Blood Banks (235)
    - WH 120 Hematologic diseases (General or not elsewhere classified) (11)
    - WH 150 Erythrocytes (30)
    - WH 155 Anemia (68)
    - WH 160 Hypochromic anemia (5)
    - WH 170 Hemolytic anemia (e.g., Sickle cell anemia) (11)
    - WH 190 Hemoglobin and other hemeproteins. Porphyrins (Associated with hemoglobin) (19)
    - WH 200 Leukocytes. Leukocyte disorders (General) (31)
    - WH 300 Blood platelets (6)
    - WH 310 Mechanism of blood coagulation. Hemostatis (7)
    - WH 312 Hemorrhagic disorders (General) (3)
    - WH 322 Blood coagulation disorders (General) (3)
    - WH 380 Bone marrow (2)
    - WH 400 Fluid elements. Plasma. Serum. Blood proteins. Blood protein disorders (17)
    - WH 420 Blood groups. Blood group incompatibility (General) (2)
    - WH 450 Whole blood. Blood derivatives. Plasma substitutes. Blood expanders (4)
    - WH 460 Blood bank procedures (33)
  - Lymphatic System (38)
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