Amyloid plaques Areas of accumulated amyloid in the brain. Anthelmintic See antihelminthic . Anthracycline Category of chemical derivatives which are known to bind to amyloid fibrils . Antibody Substance in the blood which destroys or neutralises antigens . Antigen A substance which causes the formation of antibodies , ie, provokes an immune response .
Antigens are usually proteins that are foreign to the body.
Antihelminthic A substance used to treat parasitic worms. Antioxidant A substance that prevents or inhibits oxidation. Aprotonin An antifibrinolytic agent. Astrocytes are found in the central nervous system and support the function of neurons . Ataxia Inability to coordinate voluntary muscular movement.