tokens: Transfection of an expression vector containing ORF2 but not full length cDNA was able to transform NIH3T3 cells and induce tumors in nude mice .
folded_tokens: transfection of an expression vector containing orf2 but not full length cdna was able to transform nih3t3 cells and induce tumors in nude mice .
labels: O O O B-DNA_molecule I-DNA_molecule O B-DNA_domain_or_region O O B-DNA_molecule I-DNA_molecule I-DNA_molecule O O O O B-cell_line I-cell_line O O B-tissue O B-multi_cell I-multi_cell O