The protein tyrosine kinase activity of the v-abl oncogene has been demonstrated to subvert the normal second messenger systems used by lymphoid cells for growth and differentiation .
the protein tyrosine kinase activity of the v-abl oncogene has been demonstrated to subvert the normal second messenger systems used by lymphoid cells for growth and differentiation .
O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O B-DNA_domain_or_region O O O O O O O B-other_name I-other_name I-other_name I-other_name O O B-cell_type I-cell_type O O O B-other_name O