Gene Ontology (GO)
OWL
Last submission date June 7, 2025
ID http://purl.obolibrary.org/obo/GO_0043673
http://purl.obolibrary.org/obo/GO_0043673
https://agroportal.lirmm.fr/ontologies/GO/GO_0043673
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Preferred name

sexine

Definitions
Note that the sexine sometimes consists of 5 layers, but of those, 3 layers are the most common (sexine 1 = columellae; sexine 2 = tectum; sexine 3 = sculpture elements). Sexine is distinguished on purely morphological criteria; compare with 'ectexine ; GO:0043669'. See also 'nexine ; GO:0043672'. The outer, sculptured layer of the exine, which lies above the nexine.
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