File:EB1911 Cytology - nuclear division.jpg

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English: Diagram of nuclear division of a biological cell. a, spireme stage; b, spindle formed; c, spindle complete; equatorial plate formed; d, Division completed.
Date published 1911
Source Encyclopædia Britannica (11th ed.), v. 7, 1911, “Cytology,” p. 714, fig. 6.
Author a, b and c from E. B. Wilson’s The Cell in Development and Inheritance; d from A. Gurwitsch, Morphologie u. Biologie der Zelle
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Public domain This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

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current17:04, 26 January 2017Thumbnail for version as of 17:04, 26 January 2017766 × 935 (274 KB)Bob Burkhardt (talk | contribs){{Information |Description ={{en|1=Diagram of nuclear division of a biological cell. ''a'', spireme stage; ''b'', spindle formed; ''c'', spindle complete; equatorial plate formed; ''d'', Division completed.}} |Source =''Encyclopædia Britann...

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