morphometric evaluation shows that differential growth of head plate elevation , height of the caudal region , width of the head plate and width caudal to the neural groove exceeds embryo elongation , while width of the mid-region , embryonic disc area , width of the embryonic disc , embryo height at the mid-region , length of embryonic disc , and length of the primitive streak undergo relative shrinkage .
C0231003
embryonic disc
C0033153
primitive streak