| A | B |
|---|
| bacteria | tiny one-celled living things |
| pneumonia and whooping cough | two diseases caused by bacteria |
| toxins | poisons made by some bacteria |
| mumps | viruses cause measles, chicken pox and |
| inside a body cell | a virus can reproduce |
| virus | causes a cold |
| skin | body's first line of defense |
| white blood cells | destroy bacteria |
| pus | dead bacteria and white blood cells |
| germs | bacteria or viruses that cause harm |
| antibody | attaches to virus and destroys it |
| destroyed by AIDS | white blood cells |
| pneumonia and cancer | leading causes of death in AIDS patients |
| injection | shot |
| vaccines | made of bacteria or virus particles |
| exercise | keeps heart muscle strong |
| high blood pressure | one of the main heart diseases |
| stroke | caused by broken blood vessel |
| cholesterol | fatty tissue blocking artery |
| heart attack | causes parts of heart to die |
| cancer | causes body cells to grow and multiply faster than normal |
| tumor | mass that cancer cells form |
| chemicals and radiation | kill cancer cells |
| lung cancer | caused by smoking |
| heart diseases | cause more deaths than cancer |
