Blastula

The blastula is an early stage of embryonic development in animals. It is produced by cleavage of a fertilized ovum and consisting of a spherical layer of cells surrounding a fluid-filled cavity. The blastula follows the morula and precedes the gastrula in the development sequence. A blastula has around 128 cells, with a large central cavity called the blastocoel. Also called blastosphere. A whitefish blastula is often used to help study the processes of mitosis in animal cells.The bastula is prevented from multiplying during the nuclearinjection stage.

Blastula Blástula Blastula Blastula Blástula Blastulė бластула