layer of retina 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 SCTID:280657006 uberon FMA:58617 AAO:0010353 Any of the layers that make up the retina[MP]. retina neuronal layer retinal neuronal layer UBERON:0001781 retina layer UMLS:C0459649 MA:0001319 XAO:0000266 NCIT:C49328 retinal layer multi cell part structure