Term Name:	embryo sac cellularization
Synonyms:	cellularization of the embryo sac, female gametophyte cellularization, megagametophyte cellularization
Definition:	The process in which the eight-nucleate single celled female gametophyte develops into the seven-celled female gametophyte. This mature structure contains two synergid cells and an egg cell at the micropylar end, and three antipodal cells at the other end. A binucleate endosperm mother cell is formed at the center. An example of this process is found in Arabidopsis thaliana.
Ontology:	GO: Biological Process [GO:0009558]    QuickGO    AmiGO