| A | B |
| STD (Sexually Transmitted Diseases) | Diseases for which a primary method of transmission is sexual activity. |
| AIDS (Acquired Immune Deficiency Syndrome) | An HIV infected individual is said to have AIDS when he/she has developed certain opportunistic infections (for example, pneumonia, tuberculosis, yeast infections, or other infections) or when their CD4+ cell count drops below 200. |
| HIV (Human Immunodeficiency Virus) | A virus that causes a breakdown of the immune system among humans, resulting in the inability of the body to fight infections. It is a precursor to AIDS. |
| Antibodies | Bodies in the bloodstream that react to overcome bacterial and other agents that attack the body. |
| Chlamydia | A bacterial infection similar to gonorrhea that attacks the urinary tract and reproductive organs. |
| Gonorrhea | A bacterial infection of the mucous membranes including the eyes, throat, genitals, and other organs. |
| Genital Herpes | A viral infection that can attack any area of the body but often causes blisters on the genitals. |
| Benign Tumor | A slow-growing tumor that does not spread to other parts of the body |
| Malignant Tumor | A tumor that is considered to be cancerous and will spread throughout the body if not treated. |
| Carcinoma | A malignant or invasive form of tumor. |
| Melanoma | Cancer of the cells that produce pigment of the skin. |
| Carcinogen | A substance that tends to produce a tumor or cancer. Examples include asbestos fibers and various substances in tobacco. |
| Insulin | A hormone that regulates blood-sugar levels. |
| Diabetes (Type I) | A chronic metabolic disease characterized by high blood-sugar (glucose) levels associated with the inability of the pancreas to produce insulin. It was formerly called insulin-dependent diabetes mellitus and juvenile-onset diabetes. |
| Diabetes (Type II) | A chronic metabolic disease characterized by high blood sugar, usually not requiring insulin therapy. It was formerly called adult-onset diabetes or non-insulin dependent diabetes mellitus. |