Resultsd and conclusion The infectious rate of M.pulmonis was 23 % in the conventional mice.No infection were fond in rat, guinea pig and hamster...

• 结果肺支原体在普通级小鼠中的感染率为23%25,普通级豚鼠、地鼠、大鼠和清洁级小鼠未发现有感染,且感染率与季节无明显相关性。