On the basis of the structure of vegetable organs, the first leaf and root are the earliest organs in the development of embryo.

据营养器官的形态结构判断，在海金沙胚胎发育中最早出现的营养器官是叶和根。

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The bioactivity was tested by dorsal root ganglia (DRG) of chicken embryo culture.

经鸡胚背根神经节(DRG)培养法测定具有生物学活性。

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Objective To exploit stable and reliable conditions for NGF bioassay usi ng dorsal root ganglia of chick embryo.

目的探索一套稳定可靠的鸡胚背根神经节测定NGF活性的实验条件。

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