EOG8GXJ1V GO:0044351 1/89 macropinocytosis biological_process "An endocytosis process that results in the uptake of liquid material by cells from their external environment by the 'ruffling' of the cell membrane to form heterogeneously sized intracellular vesicles called macropinosomes, which can be up to 5 micrometers in size." [PMID:14732047] EOG8GXJ1V GO:0005737 1/89 cytoplasm cellular_component "All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures." [ISBN:0198547684]