| abstract |
The present invention provides a novel lipid membrane structure excellent in blood retention when applied to a drug delivery system and selective delivery to a target site. A lipid membrane structure containing a polyoxyalkylene chain-containing lipid derivative represented by the following general formula (1). (In the formula, L, Y, W, X 1 , X 2 , X 3 , OA, Z, m 1, m 2, m 3, n 1, n 2, and n 3 are as defined in this specification.) [Selection figure] None |