MICROANATOMY

Detailed explanation-1: -The immune system can be activated by a lot of different things that the body doesn’t recognize as its own. These are called antigens. Examples of antigens include the proteins on the surfaces of bacteria, fungi and viruses.

Detailed explanation-2: -Vaccination (immunization) is a way to trigger the immune response. Small doses of an antigen, such as dead or weakened live viruses, are given to activate immune system “memory” (activated B cells and sensitized T cells). Memory allows your body to react quickly and efficiently to future exposures.

Detailed explanation-3: -Any substance capable of eliciting an adaptive immune response is referred to as an antigen (antibody generator).

Detailed explanation-4: -(ih-MYOON reh-SPONTS) The way the body defends itself against substances it sees as harmful or foreign. In an immune response, the immune system recognizes the antigens (usually proteins) on the surface of substances or microorganisms, such as bacteria or viruses, and attacks and destroys, or tries to destroy, them.

Detailed explanation-5: -An antigen is any substance that causes your immune system to produce antibodies against it.