MICROANATOMY

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

Detailed explanation-3: -What are the types of antigens? There are several types of antigens, categorized by where they come from. These include exogenous antigens, endogenous antigens, autoantigens and tumor antigens.