Term: immature gonad oocyte
Name: immature gonad
Synonyms: juvenile gonad, juvenile ovary
Definition: Immature reproductive tissue that has not undergone final maturation into either testis or ovary. During gonadal development, the gonad may be transiently intersexual where there is a parallel presence of both oocytes and spermatocytes.
Ontology: Anatomy Ontology [ZFA:0005272]

Name: oocyte
Synonyms: egg
Definition: A female germ cell that has entered meiosis.
Ontology: Anatomy Ontology [ZFA:0001109]