Average number of M. bovis bacilli per 100 fields, 40× lens in vaccinated (BCG and BCG+CFP) and unvaccinated (control) calves challenged with a field strain of M. bovis.
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Average number of M. bovis bacilli per 100 fields, 40× lens in vaccinated (BCG and BCG+CFP) and unvaccinated (control) calves challenged with a field strain of M. bovis.
创建时间：
2015-12-02
