| The simple ectodermal epithelium of the anterior metatarsal region produces the suprabasal peridermal layer around 6 days of development. |
| The tumor demonstrated predominantly mature ectodermal, mesodermal, and endodermal elements. |
| A mesenchymal signal triggers an ectodermal cell to proliferate and the cells grow downward to form a hair germ. |
| The apical ectodermal ridge consists of closely packed columnar epithelial cells, which are linked by extensive gap junctions. |
| Clouston syndrome is an hidrotic form of ectodermal dysplasia, inherited as an autosomal dominant trait with high penetrance. |
| The most interesting and most perplexing question is how ectodermal glands can be derived from what has been thought to be endodermal and mesodermal derivatives. |
