title: Studies on tuberculin-active peptides.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000942:Antigens, Bacterial; D006168:Guinea Pigs; D009169:Mycobacterium tuberculosis / Q000276:immunology / Q000378:metabolism*; D010455:Peptides / Q000302:isolation & purification* / Q000592:standards; D014373:Tuberculin / Q000302:isolation & purification* / Q000592:standards
chemical_list: D000942:Antigens, Bacterial; D010455:Peptides; D014373:Tuberculin