Immunofluorescence labeling of wolframin in the retina of the albino mouse. A) Overview of cross section of the retina with different layers as indicated. B) Intense expression of wolframin expression in RPE. INL, inner nuclear layer; IPL, inner plexiform layer; ONL, outer nuclear layer; IS, layer of inner segments; RGC, retinal ganglion cell layer; and RPE, retinal pigment epithelium. Magnification bar in A) equivalent to 50 μm; and in B) to 25 μm.