Phorbol ester treatment of a pre-B cell line up-regulated CD19 expression , induced Egr-1 , and enhanced the footprint over the GC box .
phorbol ester treatment of a pre-b cell line up-regulated cd19 expression , induced egr-1 , and enhanced the footprint over the gc box .
B-other_organic_compound I-other_organic_compound O O O B-cell_line I-cell_line I-cell_line O B-protein_molecule O O O B-protein_molecule O O O O O O O O O O