Figure 5. Temporal emergence epithelial CP49 reactivity. A–D: Labeling for CP49 (green channel) in lenses of different ages. A: 28-day mouse lens. No CP49 immunoreactivity is evident in the lens epithelium. Scale bar = 100 μm. B: 37-day mouse lens. Immunoreactivity is demarcated by the white arrows and shown at higher magnification in C. (B, scale bar = 50 μm; C, scale bar = 40 μm). D: Labeling of 45-day mouse lens shows robust CP49 reactivity in the lens epithelium (scale bar = 100 μm).