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The World's Largest Medical Library
NLM Classification 2012: Worldwide source of medical library classification

Class Numbers Added and Canceled    


Class Numbers Added - 2013
New Number Class Name Former Number(s)
QU 45 Macromolecular substances (General or not elsewhere classified) None
QU 55.95 Protein engineering QU 450; QZ 52
QU 78 Glycosides QU 75
QU 81 Monosaccharides QU 75
QU 85.6 Lipid metabolism (General or not elsewhere classified) QU 85
QU 91 Prostaglandins QU 90
QU 102 Biological factors None
QU 130.2 Metals (General or not elsewhere classified) QU 130
QU 130.4 Minerals QU 130
QU 145.3 Nutritional requirements QU 145
QU 145.7 Nutrition policy (Table G) QU 145
QU 145.72 [Nutrition policy] General coverage (Not Table G) QU 145
QU 460 Genomics QU 58.5
QU 465 Molecular medicine None
QU 550 Genetic techniques (General or not elsewhere classified) QU 450; QZ 52;
WB 60
QU 550.5 Specific techniques, A-Z None
QU 550.5.C4 Chromosome mapping QU 450; QZ 52
QU 550.5.C5 Cloning QU 450; QZ 52
QU 550.5.D6 DNA fingerprinting QU 450
QU 550.5.G4 Gene expression profiling QU 450; QZ 52
QU 550.5.G47 Genetic engineering QU 450; QZ 52;
WB 60
QU 550.5.M8 Mutagenicity tests QU 450; QZ 52
QU 550.5.P6 Polymerase chain reaction QU 450
QU 560 Genetic therapy QZ 52
QV 56 [Pharmaceutical preparations] Adverse effects (General) QZ 42
QV 58 Drug overdose. Prescription drug misuse QZ 42
W 76.1 [Health manpower and services, distribution and characteristics]
General coverage (Not Table G)
W 76
W 81 Medical tourism None
WA 289 Consumer protection and product safety (General) WA 288
WN 195 Optical imaging None
WR 670 [Skin] Surgery WR 650
WS 220 Palliative care. Terminal care WS 200


Class Numbers Canceled - 2013
No class numbers were canceled for the 2013 edition