Retinoschisin in the adult retina. a, Retinoschisin-immunolabeling surrounds the inner segment of the photoreceptors (arrowheads) and is concentrated in the area adjacent to where the inner segment joins the outer segment (double arrowheads). b, Immunohistochemical reaction products in the inner retina appear around cell bodies (arrows) in the INL, processes in the INL and IPL (arrowheads), and in the nerve fiber layer (*). c, The immunoreaction products are also associated with the end feet of Müller cells (arrowheads) in the nerve fiber layer. Scale bar: a, b, 20 μm; c, 13 μm. See Figure 1 for abbreviations.