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Subject - Immunology

Phagocytosis is the absorption of solid materials (cells, cell debris, nutrients) out of the surrounding medium in a cell. In this process, the cell membrane surrounds the material and closes itself off into a bubble (vesicle), which can then diffuse through the cell. The absorption of liquid substances is called pinocytosis, both phagocytosis and pinocytosis are subtypes of endocytosis.

3D Animation of Phagocytosis (german)
© Wiley-VCH

See also: phagocytes