tokens: The level of mRNA expression of the NM23 gene is significantly lower in cell lines that derive from more infiltrating primary melanomas than in cell lines obtained from less infiltrating tumours .
folded_tokens: the level of mrna expression of the nm23 gene is significantly lower in cell lines that derive from more infiltrating primary melanomas than in cell lines obtained from less infiltrating tumours .
labels: O O O B-other_name I-other_name O O B-protein_molecule O O O O O B-cell_line I-cell_line O O O O B-tissue I-tissue I-tissue O O B-cell_line I-cell_line O O O O B-tissue O