5 Viral systems, gene therapy systems, nucleic acid delivery systems, namely, viral vectors, non-viral vectors, gene therapy vectors, nucleic acid delivery vectors, and cells transformed by viral vectors, non-viral vectors, gene therapy vectors or nucleic acid delivery vectors for medical purposes; pharmaceutical products; biological preparations for use in medical and clinical gene therapy, nucleic acid-based therapy and cell therapy; clinical medical reagents for use in nucleic acid-based therapy, gene therapy, cell therapy, gene diagnosis and gene testing; pharmaceutical preparations, vaccines, prophylaxis products and other pharmaceutical products for use in nucleic acid-based therapy, gene therapy and cell therapy