tokens: Mutation of these elements indicated that two , MS-2beta and MS-2gamma , are critical to the induction of the CD11b gene during differentiation of the pro-monocytic cell line U937 .
folded_tokens: mutation of these elements indicated that two , ms-2beta and ms-2gamma , are critical to the induction of the cd11b gene during differentiation of the pro-monocytic cell line u937 .
labels: O O O O O O O O B-protein_molecule O B-protein_molecule O O O O O O O O B-protein_molecule O O O O O B-cell_line I-cell_line I-cell_line I-cell_line O