tokens: Virus isolated from IFNA -producing cells was able to replicate in the U937 cells but did not replicate efficiently in U937 cells transduced with the IFNA gene .
folded_tokens: virus isolated from ifna -producing cells was able to replicate in the u937 cells but did not replicate efficiently in u937 cells transduced with the ifna gene .
labels: O O O B-protein_molecule O O O O O O O O B-cell_line I-cell_line O O O O O O B-cell_line I-cell_line O O O B-protein_molecule O O