目的：在研究抗新城疫病毒因子的基础上，开发一种抗病毒作用更强，疗效更为稳定的免疫制剂。
Objective: To develop an immune preparation with more effective and stable effect of anti-virus basing on the research of anti-newcastle disease virus factors.
目的：在研究抗新城疫病毒因子的基础上，开发一种抗病毒作用更强，疗效更为稳定的免疫制剂。
Objective: To develop an immune preparation with more effective and stable effect of anti-virus basing on the research of anti-newcastle disease virus factors.
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