1. A mixture of empty liposomes containing cholesterol and sphingomyelin, or phosphatidylcholine and sphingomyelin, with other empty liposomes of a specific lipid composition. 2. A mixture according to claim 1 of empty liposomes containing cholesterol and sphingomyelin, or phosphatidylcholine and sphingomyelin, with empty liposomes containing lipids or phospholipids selected from the group consisting of cholesterol, sphingomyelins, ceramides, phosphatidyl chlorides, phosphatidyl ethylene diethanol containing one or two saturated or unsaturated fatty acids longer than 4 carbon atoms and up to 28 carbon atoms. 3. A mixture according to claim 1 of empty liposomes containing cholesterol and sphingomyelin, or phosphatidylcholine and sphingomyelin, with empty liposomes consisting of sphingomyelin. 4. A mixture according to claim 1 of empty liposomes containing sphingomyelin and 30% (w / w) or more cholesterol, with other empty liposomes of a certain lipid composition. A mixture according to claim 1 of empty liposomes containing cholesterol and sphingomyelin or consisting of cholesterol and sphingomyelin, with empty liposomes containing sphingomyelin or consisting of sphingomyelin. 6. A mixture according to claim 1 of empty liposomes containing phosphatidylcholine and sphingomyelin or consisting of phosphatidylcholine and sphingomyelin, with empty liposomes containing sphingomyelin or consisting of sphingomyelin. 7. A mixture according to claim 1 of empty liposomes containing cholesterol and sphingomyelin, with empty liposomes containing phosphatidylcholine and sphingomyelin, and with empty liposomes consisting of sphingomyelin. 8. A mixture according to claim 1 of empty liposomes containing cholesterol and sphingomyelin, with empty liposomes containing phosphatidylcholine and sphingomyelin, with empty1. Смесь пустых липосом, содержащих холестерин и сфингомиелин, или фосфатидилхолин и сфингомиелин, с другими пустыми липосомами определенного липидного состава.2. Смесь по п.
