The immature CEM T cell line expresses relatively low levels of TCF-1 alpha mRNA , which are increased upon activation of these cells by phorbol esters .
the immature cem t cell line expresses relatively low levels of tcf-1 alpha mrna , which are increased upon activation of these cells by phorbol esters .
O B-cell_line I-cell_line I-cell_line I-cell_line I-cell_line O O O O O B-protein_molecule I-protein_molecule O O O O O O O O O O O B-other_organic_compound I-other_organic_compound O