FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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Term stage S13 oocyte ID (Ontology) FBbt:00005278 (Fly Anatomy)
Definition Oocyte during stage 13 of oogenesis. It has reached its maximum volume and is completely sealed by the vitelline membrane (King, 1970). Its nuclear envelope starts to break down and the chromosomes move to the metaphase plate of meiosis I and arrest (Mahowald and Kambysellis, 1980) until fertilization (Puro and Nokkala, 1977).[ FlyBase:FBrf0021038 FlyBase:FBrf0029744 FlyBase:FBrf0034074 FlyBase:FBrf0064777 ]
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  female germline cell
   |__oocyte
       |__stage S13 oocyte
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Is a oocyte
Develops from stage S12C oocyte
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