tokens: RESULTS : All the tumors exhibited strong expression of vimentin , but most other antigens ( including smooth muscle actin ) were expressed infrequently by a minority of tumor cells or not at all .
folded_tokens: results : all the tumors exhibited strong expression of vimentin , but most other antigens ( including smooth muscle actin ) were expressed infrequently by a minority of tumor cells or not at all .
labels: O O O O O O O O O B-protein_complex O O O O O O O B-protein_complex I-protein_complex I-protein_complex O O O O O O O O B-cell_type I-cell_type O O O O O