Figure 2From: Plasticity of photoreceptor-generating retinal progenitors revealed by prolonged retinoic acid exposureAltered positioning of rods in relation to red cones in response to retinoic acid treatment. Embryos treated with DMSO (A) or 0.3 μM RA (B) at 36 hpf and fixed at 60 hpf were doubly hybridized as whole mounts with probes corresponding to rod opsin (red color) and red cone opsin (green color). Following RA treatment, rods are more abundant, cones are more sparsely distributed, and rods display spacing characteristics more typical of cones. Bar = 50 μm.Back to article page