Cepharanthine exerts antitumor activity on cholangiocarcinoma by inhibiting NF-kappaB - Seubwai, W; Vaeteewoottacharn, K; Hiyoshi, M; Suzu, S; Puapairoj, A; Wongkham, C; Okada, S; Wongkham, S (Cancer Sci, 2010)