gall bladder

The organ connected to the liver which stores bile.

gastrointestinal

(gas-tro-in-test-eye-null)

Relating to or affecting the stomach, gut or bowel.

gastroscopy

(gas-tros-cup-pee)

Examination of the stomach using a fibre optic device.

gene

A DNA sequence which determines the structure of a protein.

genotype

(jean-o-type)

The genetic make-up of an organism.

giardiasis

(jee-ar-dee-ay-siss)

An illness caused by the gut parasite Giardia lamblia.

globulins

(glob-you-lins)

Proteins found in the blood and cerebrospinal fluid.

glucose

(gloo-koze)

A form of sugar found in the bloodstream. All sugars and starches are converted into glucose before they are absorbed.

glutathione

(glue-ta-thee-own)

A natural chemical used by the body to work against oxidative stress.

glycogen

Glucose stored in cells, predominantly found in the liver.

granulocytes

(gran-you-low-sites)

See neutrophil.

granulocytopenia

(gran-you-low-sigh-toe-pee-nee-uh)

A shortage of neutrophils.

gynaecology

(guy-nu-kol-o-gee)

Study of medical conditions specific to women's reproductive organs.