A germacranolide sesquiterpene lactone suppressed inducible nitric oxide synthase by downregulating NF-κB activity. - Lee, Hwa Jin; Jung, Hyeyoun; Kwon, Junhye; Li, Hua; Lee, Da Yeon; Lim, Hyo Jin; Kim, Mi-Ran; Moon, Dong-Cheul; Ryu, Jae-Ha (Canadian Journal of Physiology & Pharmacology, 2011)