Indole-containing fractions of Brassica rapa inhibit inducible nitric oxide synthase and pro-inflammatory cytokine expression by inactivating nuclear factor-kappaB - Shin, J S; Yun, C H; Cho, Y W; Baek, N I; Choi, M S; Jeong, T S; Chung, H G; Lee, K T (J Med Food, 2011)