antiviral

A drug used to treat infections caused by viruses. … [Read more...]

anus

The opening of the rectum to the outside of the body. … [Read more...]

anxiety

Feelings of fear, dread, and uneasiness that may occur as a reaction to stress. A person with anxiety may sweat, feel restless and tense, and have a rapid heart … [Read more...]

anxiolytic

A drug used to treat symptoms of anxiety, such as feelings of fear, dread, uneasiness, and muscle tightness, that may occur as a reaction to stress. Most … [Read more...]

anxiolytic agent

A drug used to treat symptoms of anxiety, such as feelings of fear, dread, uneasiness, and muscle tightness, that may occur as a reaction to stress. Most … [Read more...]

aorta

The largest artery in the body. It carries oxygen-rich blood away from the heart to vessels that reach the rest of the body. … [Read more...]

aortocoronary bypass

Surgery in which a healthy blood vessel taken from another part of the body is used to make a new path for blood around a blocked artery leading to the heart. … [Read more...]

AP23573

A substance being studied in the treatment of soft tissue and bone cancers. It is also being studied in the treatment of other solid tumors and hematologic … [Read more...]

AP5346

A substance being studied in the treatment of head and neck cancer. It may kill cancer cells by carrying an anticancer drug into the tumor. It is a type of … [Read more...]

APC

A type of immune cell that boosts immune responses by showing antigens on its surface to other cells of the immune system. An APC is a type of phagocyte. Also … [Read more...]