OBSERVATION AND IMMUNOREACTION OF PROPAGATION OF NDV AND IBV IN IDENTIAL AVIAN EMBRYOS
OBSERVATION AND IMMUNOREACTION OF PROPAGATION OF NDV AND IBV IN IDENTIAL AVIAN EMBRYOS
同胚增殖鸡新城疫病毒和传染性支气管炎病毒的效果观察及免疫应答反应
OBSERVATION AND IMMUNOREACTION OF PROPAGATION OF NDV AND IBV IN IDENTIAL AVIAN EMBRYOS
同胚增殖鸡新城疫病毒和传染性支气管炎病毒的效果观察及免疫应答反应