(+)-Nootkatone and (+)-valencene from rhizomes of Cyperus rotundus increase survival rates in septic mice due to heme oxygenase-1 induction - Tsoyi, K; Jang, H J; Lee, Y S; Kim, Y M; Kim, H J; Seo, H G; Lee, J H; Kwak, J H; Lee, D U; Chang, K C (J Ethnopharmacol, 2011)