Apelin stimulates proliferation and suppresses apoptosis of mouse osteoblastic cell line MC3T3-E1 via JNK and PI3-K/Akt signaling pathways - Tang, Si-Yuan; Xie, Hui; Yuan, Ling-Qing; Luo, Xiang-Hang; Huang, Jiao; Cui, Rong-Rong; Zhou, Hou-De; Wu, Xian-Ping; Liao, Er-Yuan (Peptides, 2007)