| A wart consists of both epidermic and papillary hypertrophy, the interior of the growth containing a vascular loop. |
| From the epiblast are formed all such tegumentary organs or parts of organs as are epidermic in nature. |
| Both of these strata eventually become the epiblast, of which they form the epidermic and nervous layers. |
| Anatomically the essential feature is epidermic hypertrophy, with usually a varying degree of papillary hypertrophy also. |
| Ontogeny teaches unmistakably that its elementary organs, the epidermic cells, develop entirely from the ectoderm. |
| Scientists then succeeded in locally rejuvenating mice's epidermic cells thanks to chemical blocking this gene expression. |
