liposome
noun/ˈlɪpəsəʊm/, /ˈlaɪpəsəʊm/
/ˈlɪpəsəʊm/, /ˈlaɪpəsəʊm/
(chemistry)- a very small sac (= part shaped like a bag) formed of lipid molecules, used to carry a drug to a particular part of the body
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liposome