Some diseases are produced by agents, such as bacteria, viruses, and fungi. Others are caused b materials in the environment, such as cigarette smoke. Still others, such as hemophilia, are inherited.

The ____________ is to fight infection through the production of cells that inactivate foreign substances or cells.

The most common overreactions of the immune system to antigens are known as _________.

What environmental factors affect your health?

Some infectious diseases are spread from one person to another through coughing, sneezing, or physical contact. Other infectious diseases are spread through contaminated water or food. Still others are spread through contaminated water or food. Still othe

Your body's most important nonspecific defense is ____.

When the immune system makes a mistake and attacks the body's own cells, it produces an __________.

Chemical compounds that are known to cause cancer.

The observations of Pasteur and Koch led them to conclude that infectious diseases were caused by microorganisms of different types, commonly called germs.

A nonspecific defense reaction to tissue damage caused by injury or infection.

A chronic respiratory disease in which the air passages become narrower than normal.

A mixture of chemicals that appears in the atmosphere as a gray-brown haze.

Disease-causing agents are called _________, which means "sickness-makers". Diseases caused by _________ are generally called infectious diseases.

A substance that triggers the immune response is known as an _______.

The activated mast cells release chemicals known as __________.

Anything that increases the chance of disease or injury.

From his studies with various bacteria, Koch developed a series of rules still used today to identify the microorganism that causes specific disease.

Proteins that recognize and bind to antigens.

How can IDS be prevented?

How can you maintain your health?