SIKES, D Studies with the Johnin and tuberculin intradermal tests in cattle naturally infected with Mycobacterium paratuberculosis (Johne's disease). [electronic resource] - American journal of veterinary research Apr 1950 - 181-7 p. digital Publication Type: Journal Article ISSN: 0002-9645 Subjects--Topical Terms: AnimalsCattleIntradermal TestsMycobacterium avium subsp. paratuberculosisParatuberculosisTuberculinTuberculin TestTuberculosis