Method for delivery of a bioactive substance near/into a target cell

摘要: The present invention discloses a biocarrier for delivery of bioactive substance near/into target cell, comprising substance-loaded core with first electricity, and one or more block copolymer, each copolymer zwitterionic an anchoring initial electricity opposite to the wherein binds by electrostatic attraction, extends outwardly increase stability in mammalian blood. Additionally, also method using biocarrier.