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GFAP expression in SD and P23H rat retinas. (A)Detection of GFAP (apparent molecular weight of 55 kDa) in P23H rat retinas and SD controls by Western blotting at P120 and P360. GAPDH (36 kDa) levels are shown as loading controls. (B) The amount of GFAP protein present in each band was densitometrically measured and the value obtained for each sample was normalized to GAPDH levels. Bars represent the average ± SEM (n = 4). **P < 0.01; ***P < 0.001.
