在药物——载体系统中,药物不呈游离状态,而是与载体结合以加强其与预期的靶的亲和性。目前已研究的药物载体有分子的,囊状的及粒状的。前二者包括脂质体及毫微粒。毫微粒为微小固体球状(毫微球),或为其中心为空穴四周被壁围成微小的囊(毫微囊)。毫微囊包括聚氰基丙烯酸丁酯毫微囊。本文报道的制备毫微囊的单体为氰基丙烯酸异丁酯,它与水接触自动聚合成可生物 In drug-carrier systems, the drug is not free but binds to the carrier to enhance its affinity for the intended target. Currently studied drug carriers are molecular, saccular and granular. The first two include liposomes and nanoparticles. The nanoparticle is a microscopic solid spheroid (nanosphere) or a microcapsule (nanocapsule) surrounded by walls with holes around its center. The nanocapsules include polybutylcyanoacrylate nanocapsules. The preparation of nanocapsules reported in this paper is the monomer isobutyl cyanoacrylate, it is in contact with water automatically polymerized into bio-organisms