Recombinant human bone morphogenic protein-2 Induces the Differentiation and Mineralization of Osteoblastic Cells Under Hypoxic Conditions via Activation of Protein Kinase D and p38 Mitogen-Activated Protein Kinase Signaling Pathways - Woo-Hun Ha; Hwa-Sik Seong; Na-Rae Choi; Bong-Soo Park; Yong-Deok Kim (Tissue Engineering and Regenerative Medicine, 2017)