Quicktime Development Animation - Endoderm

width=280px\|height=342px\|controller=true\|autoplay=false</qt>	This animation shows the early development of endoderm forming the gastrointestinal tract, yolk sac and allantois. The movie starts approximately week 3 and continues through week 4.
	Links: Quicktime version \| labeled version \| large version \| Gastrointestinal Tract Development