对鸭肝炎鸡胚化弱毒株MY接种4日龄雏鸭后的组织变化进行了动态观察比较研究。

The dynamic changes of tissue structure in 4 days old ducklings which were infected with chicken embryo attenuated strain MY of duck hepatitis virus were observed.

youdao

通过对2，4-D浓度及生长发育时间的控制获得了高度同步化的各发育阶段体胚材料。

Synchronized embryogenic cultures at different developmental stages were obtained by controlling 2,4-D concentration and developmental time.

youdao

研究固定化碱性蛋白酶的部分性质及水解麦胚蛋白质条件。

Then the immobilized alkaline protease were characterized and the hydrolysis condition of wheat germ protein with it were optimized.

youdao