
Inhibitory effects of the extracts of Sutherlandia frutescens (L.) R. Br. and Harpagophytum procumbens DC. on phorbol ester-induced COX-2 expression in mouse skin: AP-1 and CREB as potential upstream targets
Keywords: Cancer bush; Devil's claw; Cyclooxygenase-2; CREB; AP-1; Mouse skin carcinogenesis;