v-erbA overexpression is required to extinguish c-erbA function in erythroid cell differentiation and regulation of the erbA target gene CAII .
v-erba overexpression is required to extinguish c-erba function in erythroid cell differentiation and regulation of the erba target gene caii .
B-protein_molecule O O O O O B-protein_molecule O O B-cell_type I-cell_type O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region B-DNA_domain_or_region O