Immune System

An overly strong reaction of the immune system to a foreign substance

Long-lasting immunity that results when the body makes its own antibodies in response to a specific antigen

The use of chemicals to destroy cancer cells

Disease caused by a virus, bacterium, fungus, or protist that is spread from an infected organism or the environment to another organism

Process in which a liquid is heated to a temperature that kills most bacteria

Complex group of defenses that protects the body against pathogens – includes the skin, respiratory, digestive, and circulatory systems

Substance that causes an allergic reaction

A strand of hereditary material surrounded by a protein coating that can infect and multiply in a host cell

Any complex molecule that is foreign to your body

Immunity that results when antibodies produced in one animal are introduced into another’s body; does not last as long as active immunity

Disease-carrying organism, such as a rat, mosquito, or fly, that spreads infectious disease

Process of giving a vaccine by mouth or by injection to provide active immunity against a disease

A protein made in response to a specific antigen that can attach to the antigen and cause it to be useless

Disease such as cancer, diabetes, or asthma, that is not spread from one person to another