The smallest units of an element.
The two upper chambers of the heart.
A common abnormal heart rhythm causing a rapid, irregular pulse and failure of the upper chambers of the heart (atria) to pump properly. Abbreviated to AF.
An abnormally fast but regular heart rhythm due to disturbances in the biological electrical system of the atria of the heart. It is a type of supraventricular tachycardia
A hole in the wall separating the two upper chambers of the heart (atria), present from birth. Abbreviated to ASD.
A block in the normal conduction of electrical activity between the upper and lower chambers of the heart (atria and ventricles).
One of the two upper chambers of the heart.
Relating to atrophy.
Rhinitis due to atrophy of the mucous membrane lining the nose, causing it to become thin, dry and crusty.
Inflammation of the vagina.
Withering or weakening of a body tissue due to disease or disuse.
A microbe that has been treated so as to be less able to cause disease. Attenuated bacteria or viruses are used in many immunisations, to stimulate the body's immune system against a disease without actually causing that disease.
Treatment of a microbe so that it is less able to cause disease. Attenuated bacteria or viruses are used for many immunisations, to stimulate the body's immune system against a disease without actually causing that disease.
The measurement of hearing.
Relating to the sense of hearing.
An antibody directed against the body's own tissues, typically produced in autoimmune disorders
A laboratory test used to help diagnose autoimmune disorders.
Any condition caused by the body’s immune response against its own tissues.
A test that help to diagnose disorders caused by a reaction of the immune system against the body's own cells and tissues.
The part of the nervous system supplying muscles such as the heart and bowels, known as involuntary muscles.
A disease that results from the temporary or permanent loss of blood supply to the bones.
An abbreviation for abdominal x-ray.
An ancient system of Indian medicine.
A group of organisms too small to be seen with the naked eye, which are usually made up of just a single cell.