| 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. |
| Furthermore, they suggested that such neuroendocrine carcinomas might be of endodermal rather than neuroectodermal derivation. |
| The tumor demonstrated predominantly mature ectodermal, mesodermal, and endodermal elements. |
| He coaxed some iPS cells into becoming liver endodermal cells. |
| During the embryonic stage, the tonsils arise from the second pharyngeal pouch as buds of endodermal cells. |
| Neither ectodermal nor endodermal components were identified in the sections examined. |
