G-CSF receptors lack intrinsic tyrosine kinase activity , but activation of the receptor results in the rapid induction of tyrosine kinase activity .
g-csf receptors lack intrinsic tyrosine kinase activity , but activation of the receptor results in the rapid induction of tyrosine kinase activity .
B-protein_family_or_group O O O B-amino_acid_monomer O O O O O O O O O O O O O O B-amino_acid_monomer O O O