Antibody Definition & Meaning | Health Care Term | CSIMarket
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Glossary

Antibody

Health Care Term

An antibody, also known as an immunoglobulin, is a protein molecule produced by the immune system in response to the presence of foreign substances such as bacteria, viruses or other pathogens. It plays a critical role in the body*s defense system by recognizing, binding to and neutralizing these foreign substances.

There are five classes of antibodies: IgG, IgM, IgA, IgD and IgE. Each class of antibodies has a specific function in the immune system. IgG is the most common and makes up about 75% to 80% of all antibodies in the body. It is the smallest and can cross the placenta, providing protection to the fetus.

Antibodies are used in the healthcare industry for various purposes. They can be used as therapeutic agents to treat diseases such as cancer, autoimmune disorders, and infectious diseases. Monoclonal antibodies, which are identical copies of a single type of antibody, are widely used in cancer treatment, rheumatoid arthritis, Crohn*s disease, and other conditions.

Antibodies are also used in diagnostic tests to detect the presence of specific antigens in the bloodstream. For example, pregnancy tests detect human chorionic gonadotropin (hCG), while HIV tests detect antibodies to the virus.

In recent years, the use of antibodies has expanded to include immunotherapy, which harnesses the power of the immune system to fight cancer. Immunotherapy drugs such as checkpoint inhibitors, monoclonal antibodies, and CAR T-cell therapies have shown remarkable success in treating cancer and improving patient outcomes.

In summary, antibodies play a critical role in the immune system and are widely used in healthcare for diagnostics and therapeutics. New developments in immunotherapy hold great promise for the future of medicine and the fight against diseases.




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