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.

Antibodies: Definition, Types & Function - Cleveland Clinic
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.

Types of Antibodies and Their Functions - Science Notes and Projects
There are five types of antibodies in the human body, each with its own function in protecting against infection and disease. Here is a look at the types of antibodies, their location in the body, and their functions.

Monoclonal antibody - Wikipedia
A monoclonal antibody (mAb, more rarely called moAb[3]) is an antibody produced from a cell lineage made by cloning a unique white blood cell. All subsequent antibodies derived this way trace back to a unique parent cell.

Antibody: Definition, Structure, Types, Forms, Functions
Produced and secreted by plasma cells, antibodies are soluble molecules that travel throughout the body to find and bind to their targets which are foreign substances known as antigens.

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 - Simple English Wikipedia, the free encyclopedia
Antibodies (also called immunoglobulins) are large Y-shaped proteins that can stick to the surface of bacteria and viruses. They are found in the blood or other body fluids of vertebrates. Antibodies are the key element in the adaptive immune system.

Antibodies - an overview | ScienceDirect Topics
The Fc end of the antibody molecule contains domains capable of binding and activating the first component of complement as well as binding to phagocyte Fc receptors. There are five antibody subtypes, classified by variations in the structure of the Fab region: IgG, IgM, IgA, IgD and IgE.

Antibody: MedlinePlus Medical Encyclopedia
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.