%0 Journal Article %T The Bone Marrow Microenvironment as Niche Retreats for Hematopoietic and Leukemic Stem Cells %A Felix Nwajei %A Marina Konopleva %J Advances in Hematology %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/953982 %U http://dx.doi.org/10.1155/2013/953982