Effects of DHT on inhibition of COX-2 and iNOS expression in LPS-stimulated RAW264.7 macrophage. RAW264.7 macrophage were pre-treated with DHT for 30 min, followed by stimulating with LPS (100 ng/ml) for 24 hours. The protein levels of COX-2, iNOS and GAPDH were determined by Western blot analysis. (upper panel) RI (Relative intensity) was measured by the densitometry scanning (lower panel). The data was expressed as the means ± SE from three separated experiments. *P < 0.05, **P < 0.01, significantly with the LPS-treated group only.