Licochalcone A, a polyphenol present in licorice, suppresses UV-induced COX-2 expression by targeting PI3K, MEK1, and B-Raf - Song, N R; Kim, J E; Park, J S; Kim, J R; Kang, H; Lee, E; Kang, Y G; Son, J E; Seo, S G; Heo, Y S; Lee, K W (Int J Mol Sci, 2015)