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micropinocytosis

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noun mi·cro·pi·no·cy·to·sis \ ˌmī-krō-ˌpī-nō-ˌsī-ˈtō-səs \

medical Definition of micropinocytosis

plural micropinocytoses play \-ˈtō-ˌsēz\
:the incorporation of macromolecules or other chemical substances into cells by membrane invagination and the pinching off of relatively minute vesicles

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