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Effect of overexpression of dominant-negative mutants Raf1 and Ras on CCL20 protein expression in BEAS-2B cells. The cells overexpressing dominant-negative mutants were stimulated with IL-17F for 24 hrs, and CCL20 protein levels in supernatants were measured by ELISA. The values are expressed as means ± SEM (n = 6). *P < .05 versus IL-17F-stimulated cells without vector.
