C/EBP alpha is the major CCAAT/enhancer -binding protein ( C/EBP ) form binding to this site in nuclear extracts of U937 cells .
c/ebp alpha is the major ccaat/enhancer -binding protein ( c/ebp ) form binding to this site in nuclear extracts of u937 cells .
B-protein_molecule I-protein_molecule O O O B-DNA_domain_or_region O O O B-protein_family_or_group O O O O O O O B-cell_component I-cell_component O B-cell_line I-cell_line O