Each antibody binds to a specific antigen in a highly specific interaction analogous to a lock and key. An antibody (Ab) or immunoglobulin (Ig) is a large, Y-shaped protein belonging to the immunoglobulin superfamily which is used by the immune system to identify and neutralize antigens such as bacteria and viruses, including those that cause ...

May 6, 2022 · 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. What are antibodies? Antibodies are proteins that protect you when an unwanted substance enters your body.

Apr 12, 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 order to remove them from the body.

Aug 3, 2023 · Antibodies are protein molecules naturally produced or synthesized by the B-lymphocytes. They are also known as Immunoglobulins. The use of the term antibody defines an Immunoglobulin molecule that has specificity for an epitope of …

4 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 · Antibodies are naturally produced by plasma cells within the human body to mediate an adaptive immune response against invading pathogens. There are five predominant antibodies produced, each specialized to execute certain functions.

Mar 30, 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 microorganisms) and working to destroy them. Each has distinct methods of defending your body against disease and infection.

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, parasites, and viruses) and chemicals.

Sep 8, 2024 · Antibodies are proteins that circulate in the blood and protect against foreign antigenic substances such as bacteria, viruses, fungi, parasites, chemicals, or toxins. They are Y-shaped...

Apr 12, 2025 · Antibodies are grouped into five classes according to their constant region. Each class is designated by a letter attached to an abbreviation of the word immunoglobulin: IgG, IgM, IgA, IgD, and IgE. The classes of antibody differ not …