| detection of mycobacterium avium subsp. paratuberculosis in two brown bears in the central european carpathians. | the incidence of mycobacterial infections was monitored in brown bears (ursus arctos) in the national park low tatras in the central european carpathians in slovakia. tissue samples of 20 brown bears were examined microscopically and by culture for the presence of mycobacteria. acid-fast rods were detected by ziehl-neelsen staining in a smear from the kidney of one brown bear, although the culture was negative for mycobacteria. mycobacterium avium subsp. paratuberculosis, the causative agent of ... | 2006 | 17092904 |