IgG
IgG
IgG (pronounced as /aɪ dʒiː dʒiː/), also known as Immunoglobulin G, is one of the types of antibody produced by the body's immune system to fight against infections.
Etymology
The term "IgG" is derived from the term "Immunoglobulin G". The prefix "Immuno-" comes from the Latin word "immunis" meaning "exempt", referring to the body's immune response. "Globulin" is derived from the Latin word "globus" meaning "sphere", referring to the globular proteins in the blood plasma. The "G" in IgG stands for "Gamma", which is the class of heavy chain found in these antibodies.
Function
IgG antibodies are the most common type of antibody found in the circulation. They play a crucial role in the immune response, including neutralizing toxins and viruses, and enhancing the phagocytosis of pathogens. IgG is also the only type of antibody that can cross the placenta, providing passive immunity to the fetus.
Related Terms
- Antibody: A protein produced by the body's immune system to identify and neutralize foreign objects such as bacteria and viruses.
- Immune System: The body's defense against infectious organisms and other invaders.
- Infection: The invasion and multiplication of microorganisms such as bacteria, viruses, and parasites that are not normally present within the body.
- Immune Response: The body's defensive reaction to invasion by bacteria, virus, or other foreign substances.
- Placenta: An organ that develops in the uterus during pregnancy to provide oxygen and nutrients to the growing baby, and remove waste products from the baby's blood.
- Phagocytosis: The process by which a cell engulfs a solid particle to form an internal compartment known as a phagosome.
External links
- Medical encyclopedia article on IgG
- Wikipedia's article - IgG
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