DR KLAUS BOLLER / SCIENCE PHOTO LIBRARY DR KLAUS BOLLER / SCIENCE PHOTO LIBRARY
Immunoglobulin G antibody molecules, coloured transmission electron micrograph (TEM). IgG is the most abundant human immunoglobulin, and is found in all body fluids. Each Y-shaped molecule bears two arms 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. They can also kill some pathogens directly, and can neutralise toxins. These antibodies have been negatively stained. Magnification: x1,775,000 when printed at 10 centimetres tall.
Model release not required. Property release not required.