An early stage of embryonic development in animals. It is produced by cleavage of a fertilized ovum and consists of a spherical layer of around 128 cells surrounding a central fluid-filled cavity called the blastocoel. The blastula follows the morula and precedes the gastrula in the developmental sequence. [ http://en.wikipedia.org/wiki/Blastula ]

This is just here as a test because I lose it

Term information

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efo_slim

definition

An early stage of embryonic development in animals. It is produced by cleavage of a fertilized ovum and consists of a spherical layer of around 128 cells surrounding a central fluid-filled cavity called the blastocoel. The blastula follows the morula and precedes the gastrula in the developmental sequence.

depicted by

http://upload.wikimedia.org/wikipedia/commons/c/c6/Blastulation.png

editor note

consider adding a preceding stage 'morula stage' as part of cleavage

id

UBERON:0000108