A type of vitamin. It gives yellow and orange fruit and vegetables their colour.

A type of antibiotic that prevents the growth of the cell walls of bacteria.

A type of receptor within cells, by which substances such as adrenaline and noradrenaline exert their actions.

On both sides of the body

A fluid produced by the liver, which helps the fat ingested in food to combine with the digestive juices in the gut.

Any of a group of acids produced by the liver and present in the bile.

Substances present in the bile, which help to emulsify fats in the small intestine so that they can be more easily digested.

Severe pain in the upper right-hand side of the abdomen usually caused by gallstones.

The organs and ducts by which bile is formed, concentrated and carried from the liver to the duodenum.

A bile pigment, a coloured compound produced from the breakdown of haemoglobin.

Magnification that involves both eyes.

A certain substance found in the blood or other body fluid that indicates a disease when detected.

Certain substances found in the blood or other body fluid that indicate a disease when detected.

A group of therapies that interfere with specific parts of the inflammation process. (Called 'biologic therapies' in American English.)

A substance that can be measured to help healthcare professionals to assess normal processes, disease processes or a person's response to treatment.

The removal of a small sample of cells or tissue so that it may be examined under a microscope. The term may also refer to the tissue sample itself.

A class of drugs used in osteoporosis and other bone diseases to reduce loss of bone mass

The organ that stores urine.

Inflammation of the eyelids.

Prolonged, involuntary contraction of the muscles controlling the eyelids,causing them to close.

A collection of fluid beneath the outer layer of the skin that forms a raised area.

Raised areas on the skin formed by fluid collecting beneath the outer layer of the skin.

A fluid that transports oxygen and other substances through the body, made up of blood cells suspended in a liquid.

An abnormal condition of the blood.