| The cells lying between the primitive endoderm and the polar trophectoderm comprise the embryonic ectoderm or epiblast. |
| When the egg of Amphioxus is in the blastosphere stage we cannot speak of either an epiblast or hypoblast. |
| These layers do not represent ectoderm and endoderm, respectively, since almost all the cells that form the embryo are contained in the epiblast. |
| Both of these strata eventually become the epiblast, of which they form the epidermic and nervous layers. |
| It illustrates the characters of the epiblast, the embryonic swelling, the segmentation cavity. |
| Teeth-enamel is formed from the epiblast, and dentine, cementum, pulp from the mesoblast. |
