Ankylosis: Stiffness or, more often, fusion of a joint. From the Greek ankylsis, meaning stiffening of a joint.
- Ankyrin deficiency
Ankyrin deficiency: Known also as hereditary spherocytosis (HS), this is a genetic disorder of the red blood cell membrane clinically characterized by anemia, jaundice (yellowing) and splenomegaly (enlargement of the spleen), due to deficiency of ankyrin, a protein in the membrane of the red cell. In HS the red cells are smaller, rounder, and more […]
Anlage: 1. In biology, whatever precedes something else. 2. In embryology, a precursor or forerunner or a more mature structure. For example, the stomach anlage. 3. In psychoanalysis, a predisposition to a given trait or personality characteristic. Borrowed directly from the German for a plan or arrangement, derived from the verb anlegen meaning “to lay […]
- Annals of Internal Medicine
Annals of Internal Medicine: A medical journal especially concerned with information in the field of internal medicine (adult medicine). Designed to be read largely by internists, the Annals states it is “is the leading journal for studies in internal medicine.” (Such claims aside, the Annals is without question one of the leading journals in medicine […]
- Annexin A1
Annexin A1: One of the annexins, a family of proteins that share the property of binding calcium and phospholipids. The gene for annexin A1 (ANXA1) is upregulated in hairy cell leukemia. ANXA1 protein expression is specific to hairy cell leukemia. Detection of ANXA1 (by immunocytochemical means) reportedly provides a simple, highly sensitive and specific assay […]
- Annexin V
Annexin V: A substance that normally forms a shield around certain phospholipid molecules in the blood, blocking their entry into coagulation (clotting) reactions. Annexin V is thought to be a cause of antiphospholipid syndrome.