The blastula continues to develop, eventually forming a structure called the gastrula. During the process of gastrulation, cells start to move to the interior of the blastula and the three germ ...

Article Published: 23 January 2017 The gastrula transition reorganizes replication-origin selection in Caenorhabditis elegans Marta Rodríguez-Martínez, Natalia Pinzón, Charles Ghommidh ...

Hans Spemann was a pioneer in developmental biology and received the Nobel Prize “for the discovery of the organizer effect in the embryonic stage of development”. Together with Hilde Mangold, he ...

Before gastrula formation can occur, the cells of the trophoblast are differentiated into two layers – one is an outer layer of protoplasm that contains the nuclei called the syncytium and the ...

The current understanding of Xenopus laevis development provides a comparative background for the analysis of frog developmental modes. Our analysis of development in various frogs reveals that the ...

Ritsu Kuraishi, Kenzi Osanai, Cell Movements during Gastrulation of Starfish Larvae, Biological Bulletin, Vol. 183, No. 2 (Oct., 1992), pp. 258-268 ...

Two types of animals have been recognised on the basis of origin of mouths: Protostomia (mouth arising from or near the blastopore of gastrula; gastrula is an embryonic stage) and Deuterostomia ...