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This is a plate from Gray's Anatomy. Unless stated otherwise, it is from the online edition of the 20th U.S. edition of Gray's Anatomy of the Human Body, originally published in 1918.
Caption: Series of transverse sections through the embryonic disk of Tarsius. (After Hubrecht.) Section I passes through the disk, in front of Hensenâs knot and shows only the ectoderm and entoderm. Sections II, III, and IV pass through Hensenâs knot, which is seen in V tapering away into the primitive streak. In III, IV, and V the mesoderm is seen springing from the keel-like thickening of the ectoderm, which in III and IV is observed to be continuous into the entoderm.
This image in the public domain because its copyright has expired. This applies worldwide.
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Originally from en.wikipedia; description page is (was) here
- 19:08, 27 March 2004 Magnus Manske 400x485 (81,104 bytes) (From [[:en:Gray's Anatomy]], in the [[:en:public domain]])
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Commons upload by File Upload Bot (Magnus Manske) 11:44, 18 May 2006 (UTC)
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User Magnus Manske on en.wikipedia
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