| survey of free-ranging elk from wyoming and montana for selected pathogens. | from december 1991 through january 1995, a disease survey was conducted on herds of free-ranging, hunter-killed elk (cervus elaphus nelsoni) from three areas in proximity to yellowstone national park (ynp), wyoming (usa), after tuberculosis caused by mycobacterium bovis was discovered in a captive herd of elk in the area. complete or partial sets of specimens from 289 elk collected between december 1991 and january 1993 were examined histologically; no mycobacterial lesions were observed. lesion ... | 1997 | 9131561 |