The ratio of adult beta-globin/alpha-globin mRNA in the mutant ES cells was 1/15 of that in wild-type ES cells .
the ratio of adult beta-globin/alpha-globin mrna in the mutant es cells was 1/15 of that in wild-type es cells .
O O O B-RNA_molecule I-RNA_molecule I-RNA_molecule O O B-cell_line I-cell_line I-cell_line O O O O O B-cell_type I-cell_type I-cell_type O