endoderm例句

These epithelial elements arise embryologically from foregut endoderm in the process of bronchial tubular growth.
这些表皮细胞在胚胎学上把源于支气管生长过程中的前内脏叫内胚层.

Successive section sees endoderm has exfoliate phenomenon.
连续切片见内皮层有剥脱现象.