Antibody
Protein that reacts with a specific antigen. This protein is released produced and released by B cells.
Antibodies are specialized proteins that are produced by the immune system of the body in response to the presence of foreign substances like bacteria, viruses, toxins, and other harmful agents. They are also known as immunoglobulins (Ig) and play a critical role in protecting the body against infections.
Antibodies bind to the foreign substances and mark them for destruction or removal by other immune cells such as macrophages, neutrophils, and natural killer cells. Antibodies are highly specific to the antigens or foreign substances they recognize and can differentiate between different types of antigens.
There are five different classes of antibodies, including IgG, IgM, IgA, IgD, and IgE. Each class of antibody has a specific function and is involved in different phases of immune responses.
Antibodies are also used in medical treatments such as immunotherapy and vaccination. In immunotherapy, antibodies are used to treat diseases like cancer, autoimmune disorders, and infectious diseases. In vaccination, antibodies provide protection against infections by producing immunity in the body.
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