5 Diagnostic preparations for clinical and medical and/or veterinary laboratory use, namely, DNA and/or RNA and preparations containing DNA and/or RNA for the regulation and expression of mammalian (including human), plant, microbial and synthetic genes for use in the fields of human and veterinary therapeutics; medicinal and biological preparations for clinical or medical laboratory use including preparations for the modification of gene expression; medicinal and biological preparations for pharmaceutical use in the treatment of viral infections and viral associated diseases, cancers, autoimmune diseases, central nervous system disorders and all other diseases and/or conditions that RNA interference can be used to diagnose and/or treat; pharmaceutical and other preparations for use in the fields of human and veterinary therapeutics in the treatment of viral infections and viral associated diseases, cancers, autoimmune diseases, central nervous system disorders and all other diseases and/or conditions that RNA interference can be used to diagnose and/or treat