liposome
noun [ C ] medical specialized uk/ˈlɪp.ə.səʊm/ us/ˈlɪp.ə.soʊm/
脂质体（一种由脂质的人造微小脂囊，将药物、疫苗或其它物质携带到机体的特定细胞）
an extremely small sac (= bag) made artificially from a type of lipid to carry a drug, vaccine, or other substance to particular cells in the body