[ANIMATIONS][PATH]

GASTRULATION IN SEA URCHINS
	CROSS SECTIONAL VIEW: Yellow is ectoderm, orange is endoderm, red is primary mesenchyme cells and skeleton, orange "dots" are secondary mesenchyme cells. Process from "blastula" to "pluteus" takes about 48 hours. Note: Anus is formed before the mouth.
Windows: Right click on animation and choose save to file Macintosh: Hold click on animation and choose save to file	© 2000 Chris Patton, Stanford University

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