The PCR kit for detecting omp 25 gene of Brucella abortus in raw milk was tested for its storage life, specificity and stability. Using the PCR kit, the milk samples from dairy cows in Ningxia, Gansu, Nei Monggol, Shanxi, Heilongjiang and Xinjiang provinces, China, out of which the 98 milk spe- cimens were sampled from 98 SAT-positive dairy cows, separately, and the 350 milk specimens from SAT-negative dairy cows, separately, were detected. The results showed that the positive coincident rate of the PCR kit...
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