IMMUNOGLOBULIN G Meaning and
Definition
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Immunoglobulin G (IgG) is a class of antibody proteins found in the body's immune system that play a crucial role in defending the body against pathogens such as bacteria, viruses, and parasites. It is the most abundant antibody isotype, making up about 75% of all antibodies in the bloodstream. IgG is primarily produced by B cells, a type of white blood cell, in response to the presence of foreign molecules known as antigens.
The structure of IgG consists of four protein chains: two light chains and two heavy chains, forming a Y-shaped molecule. Each chain contains both constant and variable regions. The variable region allows for specific binding to a particular antigen, while the constant region determines the immune functions of IgG.
Once an antigen enters the body, IgG is produced in response to the infection or vaccination. It works by recognizing and binding to antigens, marking them for destruction by other immune cells or neutralizing their effects. Notably, IgG can cross the placenta, providing passive immunity to fetuses and newborn babies.
Laboratory tests can measure the levels of IgG in the blood, helping diagnose and monitor several medical conditions, including autoimmune disorders, chronic infections, and certain types of cancers. Additionally, high levels of IgG antibodies to specific antigens can indicate previous exposure or immunity to certain diseases.
In summary, immunoglobulin G is a vital antibody type that helps the immune system identify, neutralize, and eliminate foreign substances or invaders, playing a significant role in maintaining overall health and immunity.
Common Misspellings for IMMUNOGLOBULIN G
- ummunoglobulin g
- jmmunoglobulin g
- kmmunoglobulin g
- ommunoglobulin g
- 9mmunoglobulin g
- 8mmunoglobulin g
- inmunoglobulin g
- ikmunoglobulin g
- ijmunoglobulin g
- imnunoglobulin g
- imkunoglobulin g
- imjunoglobulin g
- immynoglobulin g
- immhnoglobulin g
- immjnoglobulin g
- imminoglobulin g
- imm8noglobulin g
- imm7noglobulin g
- immuboglobulin g
- immhunoglobulin g
Etymology of IMMUNOGLOBULIN G
The word "immunoglobulin G" (IgG) can be broken down to understand its etymology.
1. Immunoglobulin:
- "Immun" comes from the Latin word "immunis", meaning exempt or free.
- "Globulin" is derived from the Latin word "globulus", meaning a small globe or sphere.
- Thus, "immunoglobulin" refers to a group of proteins involved in the immune response.
2. G:
- In this context, "G" stands for "gamma".
- The use of Greek letters, such as gamma (γ), is common in classifying different types of immunoglobulins.
- IgG is one of the five major classes (isotypes) of immunoglobulins in the human body.
Similar spelling words for IMMUNOGLOBULIN G
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