| 摘要 |
<p>This invention features a nucleic acid expression vector that includes a bicistronic coding unit that comprises a first segment that encodes a human tissue urokinase plasminogen activator protein and a second segment that encodes an amplifiable dominant selectable marker (e.g., dihydrofolate reductase); and a promoter (e.g., a cytomegalovirus promoter) operably linked to the bicistronic coding unit.</p> |
