药理学家早就想能将药物裹在微小的包囊内并能有选择地输送到指定的细胞,如肿瘤细胞。近来,脂质体(liposome)作为药物的载体进行了试验。它是由同心园的一层一层的磷脂和水形成,其结构很象一个葱头。由于它们有脂质的和水液的隔室, Pharmacologists have long wanted to be able to drug wrapped in tiny cysts and can be selectively delivered to the designated cells, such as tumor cells. Recently, liposomes have been tested as carriers for drugs. It is formed by a layer of phospholipids and water concentric garden, its structure is like a green onion. Because of their lipid and aqueous compartments,