Gastrulation
#Biology
Day 13-18: The development of the three germ Layers. A tube is formed from one side of the blastula to the other like when one may push a balloon with a finger to reach the other side.
#Biology
Day 13-18: The development of the three germ Layers. A tube is formed from one side of the blastula to the other like when one may push a balloon with a finger to reach the other side.