4-Somite Embryo.
Amniotic and chorionic sacs cut away.
Cranial region have thickened.
10
Cranial
Caudal
Dorsal view
1,5-3,0
Four-somite embryo, Carnegie stage 10, ~day21
To view the embryo, the amniotic and chorionic sacs have been opened. The neural fold and groove are apparent. The neural fold shows a thickening that ultimately forms the brain.
day 21
Four-somite embryo, Carnegie stage 10, ~day21
To view the embryo, the amniotic and chorionic sacs have been opened. The neural fold and groove are apparent. The neural fold shows a thickening that ultimately forms the brain.