title: WHO Expert Committee on Biological Standardization. Thirty-eighth report.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000635:transmission; D001688:Biological Products / Q000592:standards*; D003428:Cross Infection / Q000517:prevention & control / Q000635:transmission; D004340:Drug Contamination; D006509:Hepatitis B / Q000635:transmission; D006801:Humans; D012015:Reference Standards; D014944:World Health Organization
chemical_list: D001688:Biological Products