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ECB-STAGE-4

Name: not fully grown oocyte stage

ECAO ID: 0000050

Definition: "A developing female gamete that started growing in size by accumulation of yolk proteins. At this stage, it is characterized by the presence of a large nucleus, the germinal vesicle, which contains a prominent nucleolus and occupies most of the cytoplasm."


Preceded By: previtellogenic primary oocyte stage Succeeded By: fully grown oocyte with centered germinal vesicle stage