File:PSM V84 D528 Facts and factors of development fig1.jpg

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Summary

Description

Fig. 1. A nearly ripe human ovum in the living condition. The ovum is surrounded by a series of follicle cells (FC) inside of which is the clear membrane (Memb.) and within this is the ovum proper containing yolk granules (Y) and a nucleus (N) embedded in a clear mass of protoplasm. magnified 500 diameters (x 500). From O. Hertwig. B, two human spermatozoa drawn to about the same scale of magnification. (After G. Retzius)

Date

1914

Source

Edwin Grant Conklin: Facts and factors of development. The Popular science monthly, Volume 84, p524. New York, Popular Science Pub. Co., June 1914. Online: archive.org.

Author

Edwing Grant Conklin after O. Hertwig and G. Retzius

Other versions

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Licensing

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

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File history

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	Date/Time	Dimensions	User	Comment
current	15:46, 11 February 2017	1,806 × 1,466 (443 KB)	Opencooper	clean
	15:37, 11 February 2017	1,806 × 1,466 (447 KB)	Opencooper	darken and sharpen
	15:31, 11 February 2017	1,806 × 1,466 (378 KB)	Opencooper	without Internet Archive processing and levelled
	02:50, 19 March 2011	1,720 × 1,449 (426 KB)	Martin H.