oogenesis stage S13A [FBdv_00005279]

Oogenesis stage during which 12-15 nurse cell nuclei remain at the anterior of the oocyte. At this stage, the oocyte nucleus has reached its maximum volume and its chromosomes are compressed into a 5-7 micrometer karyosome.

oogenesis stage S13A

ID: FBdv_00005279

Stage

Temporal ordering number - 10210. An alternative division of stage 13 into two sub-stages, A and B, has been defined on the basis of chorion development (see FBrf0043885). This ontology uses an alternative subdivision based on nurse cell nucleus number and oocyte meiosis, as the former at least, is easier to score than chorion ultrastructure.

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## Classification

developmental stage

Relationships

immediately preceded by: oogenesis stage S12C
substage of: oogenesis stage S13

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#f1fa8c">"developmental stage" } ], "relationships": [ { "relation": { "iri": "http://purl.obolibrary.org/obo/FBdv_00018001", "label": "substage_of", "type": "substage_of" }, "object": { "symbol": "", "iri": "http://purl.obolibrary.org/obo/FBdv_00005278", "types": [ "Entity", "Class" ], "short_form": "FBdv_00005278", "label": "oogenesis stage S13" } }, { "relation": { "iri": "http://purl.obolibrary.org/obo/RO_0002087", "label": "immediately_preceded_by", "type": "immediately_preceded_by" }, "object": { "symbol": "", "iri": "http://purl.obolibrary.org/obo/FBdv_00005277", "types": [ "Entity", "Class" ], "short_form": "FBdv_00005277", "label": "oogenesis stage S12C" } } ], "xrefs": [], "anatomy_channel_image": [], "pub_syn": [], "def_pubs": [ { "core": { "symbol": "", "iri": "http://flybase.org/reports/FBrf0029744", "types": [ "Entity", "Individual", "pub" ], "short_form": "FBrf0029744", "label": "Puro and Nokkala, 1977, Chromosoma 63(3): 273--286" }, "FlyBase": "", "PubMed": "", "DOI": "" } ] }

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