background and objectives: sputum smear staining for acid-fast bacilli is initial approach to the diagnosis of pulmonary tuberculosis (ptb) but more than 50% of cases are sputum smear-negative. this study was aimed to investigate the diagnostic value of fiberoptic bronchoscopy (fob) guided bronchoalveolar lavage (bal) in patients suspected to have tuberculosis. methods: this prospective cross-s...

objectives: this current research was conducted in order to analyze the molecular characterization of isolated cryptosporidium spp. in the southwest of iran. materials and methods: in this survey, 390 fecal samples were collected from immunocompromised individuals and children under five-years-of-age. parasitic infection was evaluated using wet mount preparation, formalin ether, a modified acid...

Acid-fast bacteria in the boundary surface between salt solution and a test oil (tricaprylin) are spontaneously wet and enveloped by the oil. This behavior contrasts with that of all other cells studied by the interfacial tension method. Four strains of human tubercle bacillus and an atypical bovine strain are an exception to the first statement above. These have possessed stability in the sali...