File talk:Stage13 bf4.jpg
From Embryology
5mm Embryo
http://www.flickr.com/photos/lunarcaustic/5102540534/in/set-72157617368698808
This photo was taken on October 21, 2010 using a Nikon D700.
An embryo from an ectopic pregnancy which is approximately 3 to 4 weeks estimated gestational age from conception. It was 0.5 cm long. See larger view for detail.
3-to-4-weeks---5mm-embryo-1200px.jpg
