Figure 1. Representative retinal
flatmounts from a P17 oxygen-induced retinopathy mouse after a
retro-orbital injection of different volumes of fluorescein
isothiocyanate dextran (FITC)-dextran. The fluorescence of
0.01–0.04 ml of FITC-dextran was too weak, while the
fluorescence of 0.05 ml or 0.10 ml was fully observed. Original
magnification: 50×.