The term antibody generally refers to the free (secreted) form, while the term immunoglobulin can refer to either forms. Since they are, broadly speaking, the same protein, the terms are often treated as …

Nov 27, 2025 · Antibody, a protective protein produced by the immune system in response to the presence of a foreign substance, called an antigen. Antibodies recognize and latch onto antigens in …

An antibody is a protein produced by your immune system to attack and fight off these antigens. How do antibodies fight off antigens? The molecules on the surfaces of antigens differ from those found …

Sep 17, 2022 · IgG is the most abundant antibody, accounting for 75%-80% of all antibodies in the body. It either tags an antigen for removal or it stimulates the production of toxins or other responses to …

Nov 28, 2025 · An antibody molecule is a glycoprotein that adopts a characteristic flexible Y-shape. This structure is composed of four polypeptide chains: two identical heavy chains and two identical, …

3 days ago · An antibody is a protein component of the immune system that circulates in the blood, recognizes foreign substances like bacteria and viruses, and neutralizes them.

May 1, 2023 · The five antibody classes produced by the body include IgG, IgM, IgA, IgD, and IgE. IgM is the first antibody produced and acts as a B-cell surface immunoglobulin (Ig).

Sep 25, 2025 · IgG: The most abundant antibody found in the body. It can help to block infections caused by bacteria, viruses, parasites, or other disease-causing organisms.

Explore the function of antibodies in the immune system, how antibodies are used and produced in research, and how to choose the best antibody for you.

Jul 23, 2024 · An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. Examples of antigens include microorganisms (bacteria, fungi, …