Immunoelectron microscopic photographs of the inner segment of the photoreceptors. A: Inner segment of the photoreceptor from the control retina (nondetached). B: Inner segment of the photoreceptor from the detached retina (day 3). Mitochondria is placed regularly and the cell structure is well preserved, and AIF staining is confined to mitochondria (A, arrows). In detached retina, mitochondria degenerates and AIF staining is diffusely distributed in the cytosol of destructive cells (B, arrowheads). Original magnifications, ×13,000).