Microencapsulated Osteoblasts Support Hematopoietic Stem/Progenitor Cell Expansion in Hypoxic Environment - Ke-Dong, S; Tian-Qing, L; Guo-Feng, Z; Shuang, W; Mei-Yun, F; Fang-Xin, S; Li-Li, Z; Xue-Hu, M; Zhan-Feng, C (2010)