title: Purified protein derivative (PPD).
authors.affiliation: MRC Molecular Immunopathology Unit, MRC Centre, Cambridge, UK.
authors.forename: P J
authors.initials: PJ
authors.lastname: Lachmann
mesh_terms: D000818:Animals; D000917:Antibody Formation; D004337:Drug Carriers; D006241:Haptens / Q000008:administration & dosage / Q000276:immunology / Q000302:isolation & purification; D006801:Humans; D009169:Mycobacterium tuberculosis / Q000032:analysis / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology; D014373:Tuberculin / Q000276:immunology / Q000302:isolation & purification*; D014374:Tuberculin Test
chemical_list: D004337:Drug Carriers; D006241:Haptens; D014373:Tuberculin