Furthermore , the SH2-deleted Grf40 mutant led to a marked inhibition of these regulatory activities , the effect of which is apparently stronger than that of the SH2-deleted Grb2 mutant .
furthermore , the sh2-deleted grf40 mutant led to a marked inhibition of these regulatory activities , the effect of which is apparently stronger than that of the sh2-deleted grb2 mutant .
O O O B-protein_molecule B-protein_molecule O O O O O O O O O O O O O O O O O O O O O O B-protein_molecule B-protein_family_or_group O O