Svensk definition
Embryostadiet efter blastulastadiet, kännetecknat av morfogenetisk cellrörelse, celldifferentiering och bildande av de tre germinallagren (groddbladen).
Gastrula
Gastrula
Engelsk definition
The developmental stage that follows BLASTULA or BLASTOCYST. It is characterized by the morphogenetic cell movements including invagination, ingression, and involution. Gastrulation begins with the formation of the PRIMITIVE STREAK, and ends with the formation of three GERM LAYERS, the body plan of the mature organism.
Svenska synonymer
Urmun — Urtarm — Arkenteron
Engelska synonymer
Gastrulas — Blastopore — Blastopores — Primitive Gut — Gut, Primitive — Guts, Primitive — Primitive Guts — Archenteron — Archenterons — Gastrocoele — Gastrocoeles