Fig. 6.
AQP4 immunogold labeling in the outer retina.A, Gold particles are found along Müller cell membranes (arrow) on the internal side of the outer limiting membrane but rarely occur in the microvilli (asterisk). B, C, Inner and outer segments of photoreceptors (IS, OS, respectively) and retinal pigment epithelial cells (RPE) are immunonegative. P, Pigment granules. Scale bars, 0.5 μm.