Polarity in embryogenesis

In developmental biology, an embryo is divided into two hemispheres: the animal pole and the vegetal pole within a blastula.

The animal pole consists of small cells that divide rapidly, in contrast with the vegetal pole below it. In some cases, the animal pole is thought to differentiate into the later embryo itself, forming the three primary germ layers and participating in gastrulation.

单词	Animal pole
释义	Animal pole 英语百科 Polarity in embryogenesis In developmental biology, an embryo is divided into two hemispheres: the animal pole and the vegetal pole within a blastula. The animal pole consists of small cells that divide rapidly, in contrast with the vegetal pole below it. In some cases, the animal pole is thought to differentiate into the later embryo itself, forming the three primary germ layers and participating in gastrulation.
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Animal pole

Polarity in embryogenesis