Chemical reagents for medical and veterinary purposes; Medical and pharmaceutical preparations comprising liposomes, lipoplexes, polyplexes, microparticles, nanoparticles, or lipid-based emulsions for the treatment and prevention of cancerous diseases, infectious diseases, autoimmune disorders, genetic defects or metabolic disorders; Medical and pharmaceutical preparations comprising, in particular, liposomes, lipoplexes, polyplexes, microparticles, nanoparticles, or lipid-based emulsions and...