title: WHO guidelines for the preparation of international standards and other reference materials for biological substances.
authors.affiliation: National Institute for Biological Standards and Control, Potters Bar, Herts, UK.
authors.forename: S L
authors.initials: SL
authors.lastname: Jeffcoate
mesh_terms: D001688:Biological Products / Q000302:isolation & purification / Q000592:standards*; D004355:Drug Stability; D005612:Freeze Drying; D007394:International System of Units / Q000592:standards; D012015:Reference Standards; D014944:World Health Organization
chemical_list: D001688:Biological Products