survey of nine abortifacient infectious agents in aborted bovine fetuses from dairy farms in beijing, china, by pcr.abortion in dairy cattle causes considerable economic losses to the dairy industry. aborted fetuses and samples from the corresponding aborting dams from 12 dairy herds in beijing were tested for 9 abortifacient infectious pathogens by pcr between 2008 and 2010. from a total of 80 abortion cases collected during this period, infectious agents were detected in 45 (56.3%) cases, 22 (48.9%) of which represented co-infections with two or three infectious agents. the detected pathogens included infec ...201222366134
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