| abstract |
(57) Abstract: A glycosyl-protein derivative useful as a carrier for selectively delivering a drug to a target tissue, particularly bone marrow or brain. A formula: [R-X-] m -Z (wherein, R represents a glycosyl group, X is O- (CH 2) 2 O (CH 2) 2 O ( CH 2) represents a 3 -CO, glycosyl Z represents a protein, m is represented by the representative) 10-50 - protein derivatives. |