形けい成せい体たい

noun

organizer

In vertebrate embryology, a region of the embryo that induces differentiation in surrounding tissues; also known as the Spemann organizer.

• 両りょう生せい類るいの形けい成せい体たいは、原げん腸ちょう陥かん入にゅうの際さいに背はい側そくに形けい成せいされる。

  In amphibians, the organizer forms on the dorsal side during gastrulation.