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Effect of hyperoxia and TG EC-SOD on p21cip/waf and p53 expression. A: RNase protection assay autofluorogram detecting p21, p53, and GAPDH mRNA in air- and 95% O2-exposed animals, WT and TG, quantified in graph. B: values are pixels for p21 or p53, each normalized to corresponding GAPDH signal in each lane, mean of 8 pups/group + SE.
