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Figure 1-4: Phagocytosis
Phagocytosis is a process describing the
engulfment and destruction of extracellularly-derived materials
by phagocytic cells, such as macrophages and neutrophils. Five
steps of phagocytosis are illustrated in the image below.
||Schematic diagram of the steps in
- Attachment of the bacterium to the
long membrane evaginations, called pseudopodia.
- Ingestion of the bacterium forming
a "phagosome," which moves toward the
- Fusion of the lysosome and
phagosome, releasing lysosomal enzymes into the
- Digestion of the ingested
- Release of digestion products from
W. H. Freeman & Co. and Sumanas, Inc.
Immunology, January, 1997
Version: 3 February 2014
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