| Rauber | August A., German anatomist, 1841-1917. See: Rauber's layer. (05 Mar 2000) |
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| Rauber's layer | The thinned-out trophoblastic membrane over the embryonic disk in developing carnivores and ungulates, outermost cell layer which helps form the blastodisk; called blastodermic or primitive ectoderm. (05 Mar 2000) |