| 摘要 |
<p>A freeze-dried product is provided which, together with demonstrating satisfactory ability to express function when used to introduce a gene or antisense nucleic acid and the like, enables concentration to be adjusted easily, offers easy handling and has superior storage performance. A freeze-dried product of a complex containing a nucleic acid, oligonucleic acid or derivative thereof; a cationic polymer, or cationic lipid or aggregate containing the same; and, an anionic polymer; a method for preparing the freeze-dried product, comprising a step of forming a complex by mixing a nucleic acid, oligonucleic acid or derivative thereof; a cationic polymer, or cationic lipid or aggregate containing the same; and an anionic polymer, and a step of freeze-drying the complex; a preparation, reagent or kit containing the freeze-dried product for introducing a nucleic acid, oligonucleic acid or derivative thereof; and, a method for introducing a nucleic acid, oligonucleic acid or derivative thereof into cells that uses the freeze-dried product.</p> |
