4) Findley HW Jr, Zhou M, Davis Y, et al : Effectsof low molecular weight B-cell growth factor on proliferation of leukemic cells from children with B-cell precursor acute lymphoblastic leukemia. Blood 75 : 951-957, 1990
5) Park LS, Waldron PE, Friend D, et al : Interleukin-3, G-CSF, and G-CSF receptor expression on cell lines and primary leukemia cells : Receptor heterogeneity and relationship to growth factor responsiveness. Blood 74 : 56-65, 1989