title: Studies on the biological activity of the freeze-dried Bulgarian BCG vaccine in guinea pigs and humans.
mesh_terms: D000917:Antibody Formation; D001500:BCG Vaccine / Q000592:standards*; D002031:Bulgaria; D005612:Freeze Drying; D006968:Hypersensitivity, Delayed / Q000276:immunology; D014774:Virulence
chemical_list: D001500:BCG Vaccine