St14-6.35hpf

early neurula (6.35 hours), the A-line neural plate forms a neural fold lined by the b6.5 descendants. The embryo has a diamond shape and makes the most acute angle in the head among the neurula period. The neural fold is not closed.

Dorsal view of three-dimensional image (upper), 50% section image (middle), and longitudinal section image (lower). Dashed lines in middle indicate the position of the section. Scale bar = 50 micro m. b.p., blastopore; n.p., neural plate.