Insulin-like Growth Factor I (IGF-I) Stimulates Proliferation but also Increases Caspase-3 Activity, Annexin-V Binding, and DNA-fragmentation in Human MG63 Osteosarcoma Cells: Co-activation of Pro- and Anti-apoptotic Pathways by IGF-I - Raile, K; Hille, R; Laue, S; Schulz, A; Pfeifer, G; Horn, F; Kiess, W (Hormone and Metabolic Research, 2003)