Antibodies may be borne on the surface of an immune cell, as in a B cell receptor, or they may exist freely by being secreted into the extracellular space. The term antibody generally refers to the free …

Dec 13, 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 …

Antibodies are protective proteins produced by your immune system. They attach to antigens (foreign substances) — such as bacteria, fungi, viruses and toxins — and remove them from your body.

Sep 25, 2025 · Antibodies are proteins that circulate in the blood and protect against foreign antigenic substances such as bacteria, viruses, fungi, parasites, chemicals, or toxins.

1 day ago · After exposure to a foreign substance, called an antigen, antibodies continue to circulate in the blood, providing protection against future exposures to that antigen.

Sep 17, 2022 · Learn about the five types of antibodies or immunoglobulins in the human body. Learn the location of each type and its function in immunity.

Nov 26, 2025 · Different types of antibodies are produced by your immune system. These five antibodies help fight disease by detecting viruses, bacteria, and other pathogens (disease-causing …

Feb 3, 2025 · Antibodies, also known as immunoglobulins (IGs), are glycoproteins produced in response to an immune reaction and exhibit high specificity for the antigens that elicit the response.

Antibodies, also called immunoglobulins (Ig), are Y-shaped proteins produced by the immune system to recognize and bind to foreign substances or organisms such as bacteria. Binding to these …

Antibodies are Y-shaped proteins produced as part of the body’s immune response to infection.