| abstract |
(57) [Summary] [PROBLEMS] To amplify a target gene in a mammalian cell regardless of its chain length and structure, and to apply the protein to a protein, which is applicable to any mammalian cells and is a simple method. Get a way to mass produce products. A vector having a mammalian origin of replication and a nuclear matrix binding region is used. A target gene to be amplified is placed in such a vector in cis (the same structure as the vector) or trans (a structure different from the vector), and is introduced into mammalian cells. |