Antibody - Wikipedia
An antibody (Ab), or immunoglobulin (Ig), is a large protein belonging to the immunoglobulin superfamily which is used by the immune system to identify and neutralize antigens such as those that exist on bacteria and virus cells, including those that cause disease.

Antibody | Definition, Structure, Function, & Types | Britannica
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 order to remove them from the body. Learn more about the function and structure of antibodies in this article.

Antibodies: Definition, Types & Function - Cleveland Clinic
What do antibodies look like? Each antibody structure consists of two heavy chains and two light chains, which join to form a Y-shaped molecule. Each type of antibody has a different amino acid sequence at the tips of the “Y” which is why each antibody is shaped differently.

What Is an Antibody? Functions, Types, and Medical Uses
Learn what an antibody is, how it works in the immune system, the main antibody types, and their uses in vaccines, diagnostics, and medical therapies.

Types of Antibodies and Their Functions
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 destroy the pathogen.

Antibodies: Definition, Types, and Function - Health
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.

Antibody: Definition, Structure, Types, Forms, Functions
Each antibody has two light chains that are identical and only one of the two (lambda (λ) and kappa (κ)) light chains is present per antibody in mammals; therefore either of the chains can occur in any of the 5 types of heavy chains.

Antibody - National Human Genome Research Institute
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.

Antibody And Antigen - Immunology Explained
Discover the roles of antibodies and antigens in your body's defense. We explain the difference between an antibody and antigen and how they antibodies detect and flag harmful antigens to protect your health.

Antibody Basics: The Complete Guide | Antibodies.com
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.