Jam-a is highly expressed on human hematopoietic repopulating cells and associates with the key hematopoietic chemokine receptor cxcr4. by Watt, S, Chang, C, Hale, S, Cox, C, Blair, A, Kronsteiner, B, Grabowska, R, Zhang, Y, Cook, D, Khoo, C, Schrader, J, Buglass Kabuga, S, Martin-Rendon, E