取死于具有小鹅瘟典型症状的7日龄吉林白鹅脾脏，制成乳剂，接种于未免疫小鹅瘟疫苗的健康母鹅所产种蛋的12日龄鹅胚尿囊腔。

With 12 days goose embryo produced by healthy geese, a strain of virus was isolated from the spleen of 7 days old gosling died from gosling plaque.

youdao

取死于具有小鹅瘟典型症状的7日龄吉林白鹅脾脏，制成乳剂，接种于未免疫小鹅瘟疫苗的健康母鹅所产种蛋的12日龄鹅胚尿囊腔。

With 12 days goose embryo produced by healthy geese, a strain of virus was isolated from the spleen of 7 days old gosling died from gosling plaque.

youdao