Endosomal localization of pSmad1, pSmad2, TGIF, C184M and c-Ski in P3 mouse lenses. A. Rab5B (red), pSmad1 (green). B. EEA1 (green), pSmad2 (red). C. EEA1 (green), TGIF (red). D. EEA1 (green), C184M (red). E. c-Ski (green), C184M (red). F is a diagram of the neonatal mouse lens showing the regions that are represented in each of the images.