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Beginning in late July, NIH will start introducing a new website experience designed to make it easier to find health information, research, funding opportunities, and other resources. During the transition, you may notice changes to navigation, page layouts, and where some information is located. Learn more in our Frequently Asked Questions.

Figure 2 — Section on Epithelial and Retinal Physiology and Disease

Illustration of the proteins, enzymes, and small molecules in the RPE plasma membrane

The RPE plasma membrane contains a wide variety of proteins, enzymes, and small molecules that are specifically segregated to the apical or basolateral sides of the epithelium, which face the neural retina and choroidal blood supply, respectively.

Last updated: July 16, 2019