Rosmarinic acid in Prunella vulgaris ethanol extract inhibits lipopolysaccharide-induced prostaglandin E2 and nitric oxide in RAW 264.7 mouse macrophages - Huang, N; Hauck, C; Yum, M Y; Rizshsky, L; Widrlechner, M P; McCoy, J A; Murphy, P A; Dixon, P M; Nikolau, B J; Birt, D F (J Agric Food Chem, 2009)