A small-molecule triptolide suppresses angiogenesis and invasion of human anaplastic thyroid carcinoma cells via down-regulation of the nuclear factor-kappa B pathway - Zhu, W; Ou, Y; Li, Y; Xiao, R; Shu, M; Zhou, Y; Xie, J; He, S; Qiu, P; Yan, G (Mol Pharmacol, 2009)