title: Problems in standardization: an Interferon Standards Committee report.
mesh_terms: D000818:Animals; D001681:Biological Assay; D004274:DNA, Recombinant; D004355:Drug Stability; D006801:Humans; D007106:Immune Sera; D007372:Interferons / Q000235:genetics / Q000592:standards*; D007962:Leukocytes / Q000276:immunology; D011817:Rabbits; D012015:Reference Standards; D014944:World Health Organization
chemical_list: D004274:DNA, Recombinant; D007106:Immune Sera; D007372:Interferons