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Neonatal hyperoxia stimulates alveolar epithelial mRNA expression. Newborn mice were exposed to RA or O2 through pnd4, pnd7, and pnd10. The mRNA expression of Sftpc, Abca3, T1α, Aqp5, Pecam, and 18S ribosomal RNA as a loading control were determined by quantitative RT-PCR. The mRNA expression in mice exposed to RA (white bar) and hyperoxia (black bar) were graphed as mean ± SE fold change over RA (n = 4 mice per group). *P < 0.05 and **P < 0.01 when compared with RA.
