sentences:  Numerous trials have indicated that exposure to oral and injectable products derived from "M. vaccae" bacteria can have positive effects in treating tuberculosis.Although a 2002 review of selected clinical trials failed to find any consistent benefit of certain dosage regimens of injectable "Mycobacterium" products in people with tuberculosis, a more recent meta-analysis of 54 clinical studies of M. vaccae products for tuberculosis showed treatment resulted in improved sputum conversion and radiological (X-ray) assessment.Medical researchers at Kharkiv National Medical University, Kharkiv, Ukraine have reported two clinical trials with oral formulations of Immunitor Inc's killed "Mycobacterium vaccae" oral vaccine and An Hui Longcom's killed "Mycobacterium vaccae" oral vaccine in treating tuberculosis, including drug resistant TB (MDR-TB).