The frequency of the cells which expressed beta- and gamma- globin genes in the two cell populations was measured by immunofluorescence with beta- and gamma- specific antibodies .
the frequency of the cells which expressed beta- and gamma- globin genes in the two cell populations was measured by immunofluorescence with beta- and gamma- specific antibodies .
O O O O O O O O O O O O O O O O O O O O B-other_name O O O O O O O