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APC acts differentially on cultured HDFs and RSFs in p21 and p27 induction. HDFs (A) and RSFs (B) were treated with APC for 24 h, and p21 and p27 were measured by Western blotting. β-Actin was used as a loading control. The band intensity of the proteins was normalized with β-actin, and controls were defined as 1. Values are the mean ± SD of two separate experiments.
