Attenuated function of a variant form of the helix-loop-helix protein , Id-3 , generated by an alternative splicing mechanism .
attenuated function of a variant form of the helix-loop-helix protein , id-3 , generated by an alternative splicing mechanism .
O O O O O O O O B-protein_family_or_group I-protein_family_or_group O B-protein_molecule O O O O O O O O