ANATOMY

Detailed explanation-1: -An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shaped protein used by the immune system to identify and neutralize foreign objects such as pathogenic bacteria and viruses. The antibody recognizes a unique molecule of the pathogen, called an antigen.

Detailed explanation-2: -Antibodies are Y-shaped proteins produced as part of the body’s immune response to infection. They help eliminate disease-causing microbes from the body, for instance by directly destroying them or by blocking them from infecting … cells.

Detailed explanation-3: -A Typical Antibody Has Two Identical Antigen-Binding Sites The simplest antibodies are Y-shaped molecules with two identical antigen-binding sites, one at the tip of each arm of the Y (Figure 24-18). Because of their two antigen-binding sites, they are described as bivalent.

Detailed explanation-4: -antibody, also called immunoglobulin, 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.