A comparative study of the intradermal johnin test on cattle artificially and naturally sensitized with Mycobacterium paratuberculosis.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases; D004403:Dysentery; D007428:Intradermal Tests; D016927:Mycobacterium avium subsp. paratuberculosis
CATTLE/diseases; DYSENTERY