File:Gallus gallus domesticus (01).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(877 × 816 pixels, file size: 582 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description Fig. 155. Cleavage in the chick blastoderm, surface views. (C after Olsen. '42; the rest after Patterson, MO.) (A) First cleavage is approximately meridional. (B) Second cleavage is at right angles to first. (C) Third cleavage planes are vertical as indicated and approximately parallel to one of the other cleavage planes. Considerable inequality may exist at this time. (This figure slightly modified from original.) (D) Seventeencell stage. Observe central and marginal cells. (E) Stage approximating 32-cell condition. (F) Surface view of 64-cell stage; 41 central and 23 marginal cells. (G) Surface view of blastoderm in lower portions of oviduct; 31 marginal and 123 central cells. (H) Later blastoderm, showing 34 marginal and 312 central cells.
Date
Source https://archive.org/details/comparativeembry00nels/page/313/mode/1up?view=theater&q=BLASTULATION+ Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illustrations.
Author Nelsen, Olin E.

Licensing

[edit]
Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

This file, which was originally posted to an external website, has not yet been reviewed by an administrator or reviewer to confirm that the above license is valid. See Category:License review needed for further instructions.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current10:54, 11 March 2024Thumbnail for version as of 10:54, 11 March 2024877 × 816 (582 KB)Rasbak (talk | contribs){{Information |description=Fig. 155. Cleavage in the chick blastoderm, surface views. (C after Olsen. '42; the rest after Patterson, MO.) (A) First cleavage is approximately meridional. (B) Second cleavage is at right angles to first. (C) Third cleavage planes are vertical as indicated and approximately parallel to one of the other cleavage planes. Considerable inequality may exist at this time. (This figure slightly modified from original.) (D) Seventeencell stage. Observe central and margin...

You cannot overwrite this file.

There are no pages that use this file.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Gallus_gallus_domesticus_(01).jpg&oldid=859744286"