title: Nicotinic acid production of BCG substrains in relationship to their residual virulence and immunogenic efficacy.
mesh_terms: D000917:Antibody Formation; D000942:Antigens, Bacterial; D001500:BCG Vaccine; D003470:Culture Media; D009163:Mycobacterium bovis / Q000276:immunology / Q000378:metabolism / Q000472:pathogenicity*; D009169:Mycobacterium tuberculosis / Q000276:immunology / Q000378:metabolism; D009539:Nicotinic Acids / Q000096:biosynthesis*; D014774:Virulence
chemical_list: D000942:Antigens, Bacterial; D001500:BCG Vaccine; D003470:Culture Media; D009539:Nicotinic Acids