Endoderm is one of the three primary germ layers in the very early human embryo. The other two layers are the ectoderm (outside layer) and mesoderm (middle layer), with the endoderm being the innermost layer. Cells migrating inward along the archenteron form the inner layer of the gastrula, which develops into the endoderm.
近义、反义、联想词
近义词
n.
germ layer
英英词典
entoderm n.
the inner germ layer that develops into the lining of the digestive and respiratory systems