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Analysis of gene expression in livers of Hif1a+/+ and Hif1a+/− mice using real-time PCR. Quantitative real-time RT-PCR was performed using specific primers for HIF-2α and p21Cip1 mRNA. Fold-change in mRNA levels for HIF-2α and p21Cip1 in Hif1a+/− mice compared to Hif1a+/+ mice is depicted
