PATHOLOGY

Detailed explanation-1: -Each pathogen is made up of several subparts, usually unique to that specific pathogen and the disease it causes. The subpart of a pathogen that causes the formation of antibodies is called an antigen. The antibodies produced in response to the pathogen’s antigen are an important part of the immune system.

Detailed explanation-2: -An antigen is any substance that causes your immune system to produce antibodies against it. This means your immune system does not recognize the substance, and is trying to fight it off. An antigen may be a substance from the environment, such as chemicals, bacteria, viruses, or pollen.

Detailed explanation-3: -Antigens are found on viruses, bacteria, tumors and normal cells of your body.

Detailed explanation-4: -“Antigens” are molecular structures on the surface of viruses that are recognized by the immune system and are capable of triggering one kind of immune response known as antibody production.

Detailed explanation-5: -Every type of pathogen has at least one (often many more) unique molecules known as antigens in their structure.