释义 |
johnin joh·nin (yō'nin), A product used as a diagnostic agent, analogous to tuberculin but made from Mycobacterium paratuberculosis (the causative organism of Johne disease) grown in a broth medium containing Mycobacterium phlei (timothy hay bacillus); used as an allergen to provoke reactions in infected animals. [H. A. Johne] Johne, H. Albert, German physician, 1839-1910. Johne bacillus - a species causing Johne disease, a chronic enteritis in cattle. Synonym(s): Mycobacterium paratuberculosisJohne disease - a disease occurring in cattle and sheep, caused by infection with Mycobacterium paratuberculosis. Synonym(s): chronic dysentery of cattle; paratuberculosisjohnin - a diagnostic agent, analogous to tuberculin. |