part_of part of part of contributes to morphology of retina layer of retina SCTID:280657006 uberon Any of the layers that make up the retina[MP]. FMA:58617 retina neuronal layer retinal neuronal layer UMLS:C0459649 EMAPA:35742 MA does not treat internal/external limiting memranes as layers - these are classified as laminae. Here we follow other ontologies in grouping with other layers. MA also treats retinal pigment epithelium and neural retina epithelium as distinct from the layers. We follow ontologies such as FMA and ZFA in first dividing into pigmented and neural layers - these are also classified as layers, giving us over the usual 10 layers AAO:0010353 UBERON:0001781 retina layer MA:0001319 XAO:0000266 retinal layer NCIT:C49328 nervous system cell part layer