| Johne's bacillus | A species of gram-positive, aerobic bacteria non-pathogenic for humans. It is the aetiologic agent of johne's disease (see paratuberculosis). (12 Dec 1998) |
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| Johne's disease | A disease occurring in cattle and sheep, usually manifested by thickening of the wall of the intestine, particularly of the ileum; caused by infection with Mycobacterium paratuberculosis. Synonym: chronic dysentery of cattle, paratuberculosis. (05 Mar 2000) |
| Johne, H Albert | <person> German physician, 1839-1910. See: johnin, Johne's bacillus, Johne's disease. (05 Mar 2000) |
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