E

epidermal growth factor receptor

The protein found on the surface of some cells and to which epidermal growth factor binds, causing the cells to divide. It is found at abnormally high levels on … [Read more...]

epidermis

The outer layer of the two main layers of the skin. … [Read more...]

epidermoid carcinoma

Cancer that begins in squamous cells (thin, flat cells that look like fish scales). Squamous cells are found in the tissue that forms the surface of the skin, … [Read more...]

epidermolysis bullosa

A group of chronic skin disorders in which fluid-filled blisters form on the skin and mucosa (the moist, inner lining of some organs and body cavities). … [Read more...]

epididymis

A narrow, tightly-coiled tube that is attached to each of the testicles (the male sex glands that produce sperm). Sperm cells (male reproductive cells) move … [Read more...]

epidural

Having to do with the space between the wall of the spinal canal and the covering of the spinal cord. An epidural injection is given into this space. … [Read more...]

epidural block

An injection of an anesthetic drug into the space between the wall of the spinal canal and the covering of the spinal cord. … [Read more...]

epigastric

Having to do with the upper middle area of the abdomen. … [Read more...]

epiglottis

The flap that covers the trachea during swallowing so that food does not enter the lungs. … [Read more...]

epilepsy

A group of disorders marked by problems in the normal functioning of the brain. These problems can produce seizures, unusual body movements, a loss of … [Read more...]