File:PSM V84 D538 Facts and factors of development fig14.jpg
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| Description | Fig. 14. Diagrams showing the early development of the human Oosperm. A, cleavage stage which has just come into the uterus; D, E and F, longitudinal sections of later stages, the anterior and posterior poles being marked by the axis a p. In C cavities have appeared in the ectoderm, entoderm and mesoderm. D, villi forming from the trophoblast (nutritive layer, tr); black indicates ectoderm (ect); oblique lines, entoderm; few stiples, mesoderm; V, villi; am, amnion; ys, yolk sac; n, neurenteric canal (x25). (From Keibl.) | |||
| Date | ||||
| Source | Edwin Grant Conklin: Facts and factors of development. The Popular science monthly, Volume 84, p534. New York, Popular Science Pub. Co., June 1914. Online: archive.org. | |||
| Author | Edwing Grant Conklin after Keibl | |||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 08:20, 22 March 2018 | | 789 × 767 (101 KB) | Ineuw (talk | contribs) | Cleaned image, enhanced contrast |
| 02:51, 19 March 2011 |  | 1,720 × 1,324 (231 KB) | Martin H. (talk | contribs) |
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