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procedure for the manufacture of a vaccine for the protection of laying birds against egg drop disease
procedure for the manufacture of a vaccine for the protection of laying birds against egg drop disease
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机译:预防产蛋鸡产蛋下降疾病的疫苗生产程序
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摘要
There are disclosed novel vaccines for immunizing egg-laying birds against Egg Drop disease, a group of novel viruses (generically called EDS 76 virus) used in the preparation of such vaccines, and methods for immunizing egg-laying birds against Egg Drop disease or syndrome.
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