part of part of in taxon results in development of in utero embryonic development blastocyst development https://github.com/geneontology/go-ontology/issues/29162 GO:0001824 The process whose specific outcome is the progression of the blastocyst over time, from its formation to the mature structure. The mammalian blastocyst is a hollow ball of cells containing two cell types, the inner cell mass and the trophectoderm. The blastula follows the morula and precedes the gastrula in the developmental sequence. See also the Anatomical Dictionary for Mouse Development ontology terms 'TS5, embryo ; EMAP:23', 'TS5, inner cell mass ; EMAP:24' and 'TS5, trophectoderm; EMAP:28'. biological_process blastula development anatomical structure development Theria <mammals> blastocyst