Anti-proliferative effect of methanolic extract of <it>Gracilaria tenuistipitata</it> on oral cancer cells involves apoptosis, DNA damage, and oxidative stress oleh Yeh Chi-Chen, Yang Jing-Iong, Lee Jin-Ching, Tseng Chao-Neng, Chan Ya-Ching, Hseu You-Cheng, Tang Jen-Yang, Chuang Li-Yeh, Huang Hurng-Wern, Chang Fang-Rong, Chang Hsueh-Wei