[Study of tubercle bacilli from persistently sputum-positive patients treated with antituberculosis drugs for long duration in 3 Shanghai districts].
D000818:Animals; D000995:Antitubercular Agents / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D006168:Guinea Pigs; D006801:Humans; D051379:Mice; D009169:Mycobacterium tuberculosis / Q000187:drug effects / Q000302:isolation & purification*; D013183:Sputum / Q000382:microbiology*; D013997:Time Factors; D014397:Tuberculosis, Pulmonary / Q000382:microbiology*
D000995:Antitubercular Agents