gastrula
— Navneord
– Engelsk
~ double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm
gastrulation
— Navneord
– Engelsk
~ the process in which a gastrula develops from a blastula by the inward migration of cells