禽多杀性巴氏杆菌G190E40弱毒菌种两种菌落制造疫苗的安全性及免疫效力比较试验
금다살성파씨간균G190E40약독균충량충균락제조역묘적안전성급면역효력비교시험
A comparison test of safety and immunization efficacy of vaccines made from two different diameter colonies of attenuated Pasteurella multocida strain G190E10 in chicken
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