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Activation of ERK pathway by PFBS. Upon induction of differentiation, preadipocytes were treated by PFBS (100 μM) for 4 hours. Then, phosphorylation of ERK was determined by immunoblotting. A. Representative results; B. Ratio of phospho-ERK to ERK. Numbers are mean ± S.E. (n=3). * indicates a significant difference against the control (P< 0.05).
