31. Cerberus is an inhibitor in the TGF beta signaling pathway secreted during the gastrulation phase of the embryogenesis. 32. With a functioning digestive tube, gastrulation is now completed and the next stage of neurulation can begin. 33. Besides ingression, two other types of internalizing cell movements may occur during gastrulation : invagination and involution. 34. The encoded protein has sequence similarity to short gastrulation ( Sog ) and procollagen IIA proteins in Drosophila. 35. It showed that just before or during gastrulation , embryonic stem cells lacking HDAC1 acquired visible developmental defects. 36. More than just axonal guidance, Ephs have been implicated in the migration of neural crest cells during gastrulation . 37. The formation of the primitive streak, through which gastrulation occurs, is induced by Koller's sickle. 38. In " Xenopus laevis ", Cyr61 is required for normal gastrulation and modulation of Wnt signaling. 39. As the cells of Koller s sickle migrate during gastrulation , they form different portions of the primitive streak. 40. During gastrulation in both invertebrates and vertebrates, apical constriction of a ring of cells leads to blastopore formation.
