Monoallelic expression of TAL1 was observed in the leukemic cells of all patients ( 8 of 8 ) bearing a TAL1 gene rearrangement .
monoallelic expression of tal1 was observed in the leukemic cells of all patients ( 8 of 8 ) bearing a tal1 gene rearrangement .
B-other_name I-other_name O B-protein_molecule O O O O B-cell_type I-cell_type O O B-multi_cell O O O O O O O B-protein_molecule O O O