tokens: Moreover , cell lines derived from tumours of patients with a disease-free survival of more than 24 months ( 24-58 months ) express the NM23 gene at higher levels than cell lines obtained from melanomas of patients with a disease-free survival of less than 24 months ( 6-15 months ) .
folded_tokens: moreover , cell lines derived from tumours of patients with a disease-free survival of more than 24 months ( 24-58 months ) express the nm23 gene at higher levels than cell lines obtained from melanomas of patients with a disease-free survival of less than 24 months ( 6-15 months ) .
labels: O O B-cell_line I-cell_line O O B-tissue O B-multi_cell O O B-other_name I-other_name O O O O O O O O O O O B-protein_molecule O O O O O B-cell_line I-cell_line O O B-tissue O B-multi_cell O O B-other_name I-other_name O O O O O O O O O O