Engelsk navneord: gastrula | |||
1. | gastrula (om dyr) 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 | ||
Mindre specifikke termer | conceptus, embryo, fertilized egg | ||
Omfatter disse specifikke termer | archenteron | ||