Image:Gray4.png

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Description
Public domain
This faithful reproduction of a lithograph plate from Gray's Anatomy, a two-dimensional work of art, is not copyrightable in the U.S. as per Bridgeman Art Library v. Corel Corp.; the same is also true in many other countries, including Germany. Unless stated otherwise, it is from the 20th U.S. edition of Gray's Anatomy of the Human Body, originally published in 1918 and therefore lapsed into the public domain. Other copies of Gray's Anatomy can be found on Bartleby and also on Yahoo!.

Caption: Formation of polar bodies in Asterias glacialis. (Slightly modified from Hertwig.) In I the polar spindle (sp) has advanced to the surface of the egg. In II a small elevation (pb1) is formed which receives half of the spindle. In III the elevation is constricted off, forming the first polar body (pb1), and a second spindle is formed. In IV is seen a second elevation which in V has been constricted off as the second polar body (pb2). Out of the remainder of the spindle (f.pn in VI) the female pronucleus is developed.

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Originally from en.wikipedia; description page is (was) here

  • 19:01, 27 March 2004 Magnus Manske 580x341 (65,189 bytes) (From [[:en:Gray's Anatomy]], in the [[:en:public domain]])
Date

Commons upload by File Upload Bot (Magnus Manske) 11:42, 18 May 2006 (UTC)
Author

User Magnus Manske on en.wikipedia
Permission
(Reusing this image)

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Date/TimeDimensionsUserComment
current19:22, 23 January 2007580×341 (58 KB)Pngbot (optimized with optipng)
11:42, 18 May 2006580×341 (64 KB)File Upload Bot (Magnus Manske) ( {{Information| |Description= {{Gray's Anatomy plate|Formation of polar bodies in Asterias glacialis. (Slightly modified from Hertwig.) In I the polar spindle (sp) has advanced to the surface of the egg. In II a small elevation (pb1) is formed which recei)
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