title: Virulence in the guinea pig of M. tuberculosis strains isolated from untreated patients in nine American countries.
mesh_terms: D000569:Americas; D000818:Animals; D004352:Drug Resistance, Microbial; D006168:Guinea Pigs; D006861:Hydrogen Peroxide / Q000494:pharmacology; D007538:Isoniazid / Q000494:pharmacology; D008297:Male; D009169:Mycobacterium tuberculosis / Q000187:drug effects / Q000302:isolation & purification / Q000472:pathogenicity*; D014376:Tuberculosis / Q000382:microbiology; D014774:Virulence
chemical_list: D006861:Hydrogen Peroxide; D007538:Isoniazid