Photomicrograph of a developing sea urchin embryo in the late gastrula stage, DIC, mag. 160x (at 24 x 36 mm). The gastrula stage is marked by the invagination of the endoderm layerinside the blastocoel to form the archenteron. The archente ron, or primitive gut, eventually forms a digestive cavity. (c) Herve Conge
Credit
ISM
/ Hervé CONGE
Dimensions
4252 x 2835 pixels
Print Size @ 300 dpi
14 x 9 inches / 36 x 24 cm