PDF chapter test TRY NOW

Becoming exposed to or infected with an infectious microbe does not necessarily mean developing noticeable disease. Explain.
 
a. A person who maintains a healthy lifestyle and has a strong immune system can fight off microbes that cause infections.
 
b. The body's immune system lacks specific cells designed to eliminate harmful microorganisms.
 
c. When harmful microbes invade the body, the immune system responds by activating immune cells to fight the pathogen.