Phosphorothioate oligodeoxyribonucleotide analogs can be used to prevent replication of foreign nucleic acids in the presence of normal living cells, as well as to inhibit the proliferation of neoplastic cells....http://www.google.com/patents/US5276019?utm_source=gb-gplus-sharePatent US5276019 - Inhibitors for replication of retroviruses and for the expression of oncogene products
