__________ are tiny organisms that cause communicable diseases.

Tiny one-celled organisms that live nearly everywhere are called ___________.

Colds, flu, and hepatitis are caused by ____________.

Ringworm and athlete's foot are examples of diseases caused by ____________.

___________ is your body's ability to resist the germs that cause a particular disease.

The first nonspecific immune response is ____________, or increased blood flow to the affected area.

Lymphocytes that produce antibodies are called ____________.

Lymphocytes that attack pathogens directly and that stimulate the production of B cells are called ______________.

Strep throat can be cured with antibodies.

Rubella is a viral disease of the liver characterized by yellowing of the skin.

Fatigue has no effect on your immune system.

A person with an STD may have no symptoms.

The only sure way to prevent an STD is to practice good hygiene.

An STD for which there is no known cure is chlamydia.

HIV infects and destroys

HIV is passed from one person to another

HIV is not spread by

What is the body's main line of defense?

What is the most familiar communicable disease?