Body and illness. Part 1.

An organism that is so small it cannot be seen without a microscope is...

• disease

• microorganism

• fever

Anything that causes an allergic reaction like a rash or sneezing is...

• vaccine

• toxin

• allergen

Different from the way something usually is or works.

• abnormal

• crazy

• infectious

A disease caused by the body working in an abnormal way and not by a pathogen is...

• noninfectious disease

• infectious disease

• chickenpox

Any organism that causes a disease is...

• allergen

• toxin

• pathogen

The body’s natural defense against disease. It includes white blood cells, which attack pathogens.

• immune system

• blood

• sneezing

A disease caused by microorganisms that invade the body is...

• noninfectious disease

• infectious disease

• vaccine

Poison that attacks cells in the body is...

• water

• toxin

• mosquito

A weakened form of a virus injected into the bloodstream so the body will make antibodies to that virus is...

• vaccine

• toxin

• fever

"Чхати" in English is...

• breath

• sneeze

• blow