Immunoglobulin G antibody molecule
by Science Photo Library
Title
Immunoglobulin G antibody molecule
Artist
Science Photo Library
Medium
Photograph - Photograph
Description
Immunoglobulin G antibody molecule. Computer artwork of a model of the secondary structure of immunoglobulin G (IgG). This is the most abundant immunoglobulin and is found in all body fluids. Each Y-shaped molecule has two arms (top) that can bind to specific antigens, for instance bacterial or viral proteins. In doing this they mark the antigen for destruction by phagocytes, white blood cells that ingest and destroy foreign bodies. Antibodies can also kill some pathogens directly, and can neutralise toxins.
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March 6th, 2014
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