By Northern analysis , UT-7 cells expressed detectable levels of beta- and gamma-globin but not alpha-globin .
by northern analysis , ut-7 cells expressed detectable levels of beta- and gamma-globin but not alpha-globin .
O B-other_name I-other_name O B-cell_line I-cell_line O O O O B-protein_molecule I-protein_molecule I-protein_molecule O O B-protein_molecule O