Antibody - Wikipedia
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 ...

Antibodies: Definition, Types & Function - Cleveland Clinic
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 naturally in your body.

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.

Antibody: Definition, Structure, Types, Forms, Functions
Antibody (Immunoglobulin) diversity. The immune system has the ability to generate a high level of diversity in order to recognize a very vast range of unique molecules estimated to be in billions. With this capability, foreign structural, foreign antigens can be recognized and eliminated.

What is an antibody? - Medical News Today
Antibodies develop in response to an infection or enter the body passively through vaccination. An antibody is sometimes called an immunoglobulin. But not all antibodies are immunoglobulins,...

Antibody- Structure, Classes and Functions - MicrobiologyInfo.com
Antibody (Ab) also know as Immunoglobulin (Ig) is the large Y shaped protein produced by the body’s immune system when it detects harmful substances, called antigens like bacteria and viruses.

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.

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.

22.3: Antibodies - Biology LibreTexts
Antibody classes also exhibit important differences in abundance in serum, arrangement, body sites of action, functional roles, and size (Figure \(\PageIndex{5}\)). IgG is a monomer that is by far the most abundant antibody in human blood, accounting for about 80% of total serum antibody. IgG penetrates efficiently into tissue spaces, and is ...

Antibody basics - Abcam
The basic principle of any immunoassay is that a specific antibody binds with its specific antigen, forming an exclusive antibody-antigen complex. This chapter defines what an antigen is and how to choose one to make an antibody.