High expression levels of G-CSFR in leukemic cells from patients with t(8;21) and hematopoietic cell lines with t(8;21).

(A) Ligand binding assays for G-CSFR activities in leukemic cells with or without t(8;21) in M2, and in normal granulocytes. (B) Northern blot analyses of poly(A)+RNAs from hematopoietic cell lines. Northern blots were hybridized with human G-CSFR, MPO, and G3PDH cDNA.