Serine phosphorylation of STAT1 and STAT3 was seen occasionally in other leukemias , but it was a universal finding only in CLL .
serine phosphorylation of stat1 and stat3 was seen occasionally in other leukemias , but it was a universal finding only in cll .
B-amino_acid_monomer O O B-protein_molecule O B-protein_molecule O O O O O B-other_name O O O O O O O O O B-other_name O