Mycobacterium paratuberculosis causes Johne's disease, a chronic bowel disease in ruminants worldwide and is currently incurable. This study was conducted to compare methods for examining the proteome of M. paratuberculosis. SDS-PAGE, native PAGE and SELDI-TOF-MS were compared and the efficacy of
Mycobacterium avium subsp. paratuberculosis, the cause of Johne's disease in ruminants, cannot be cultured in large quantities from affected sheep in Australia. A method is described for the purification of the organism from the intestinal mucosa of sheep with multibacillary Johne's disease in order
A 6-year study was conducted in 4 dairy herds in Iowa in which Johne's disease was diagnosed previously. Fecal specimens were collected at 6-month intervals from animals 2 years of age and over for mycobacteriologic examination. Serum samples were obtained at 3-month intervals and tested by
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