Figure 7. The morphology, location, and numbers of ribbon synapses in Piccolo-/- mice. (A) Immunostaining with anti-CtBP2 antibodies of retina cryosections from wild type (WT) and Piccolo-/- mice at P30. DAPI stains nuclei. Scale bars: 20 μm. (B) The morphology of ribbon synapses in the Piccolo-/- and WT mice. Scale bars: 10 μm. (C) The cytoplasmic location of retinal ribbon synapses (indicated by arrows) in Piccolo-/- mice. Scale bars: 1 μm.