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Quantification of RGCs per millimeter of retina in controls retinas and in explants maintained in the presence or absence of human PRGF. The number of RGCs per linear mm of retina are shown in control retinas (n = 5) and in organotypic cultures at day 3, maintained in the presence (n = 4) or absence of 10% human PRGF (n = 4). Significant differences between the controls and explants are indicated: *p < 0.05.
