Self forming, thermodynamically stable liposomes

[Subject] Solve various problems, such as changeability between the colloid instability accompanying the present リポソーム prescription, the difficulty in the scaled-up sterilization, and the batch in manufacture. [A solution means] The process of being how to prepare リポソーム and offering: solution below; it is the process of offering lipid solution and this solution is P between about 0.84 and 0.88. A P between about 0.88 and 0.93 v How to を有 and include the process in which at least one lipid in this solution contains a polyethylene-glycol (PEG) chain and with which a process, lipid solution, and solution are united. [Selection figure] Fig. 1