AACN – It is an abbreviation for American Association of College of Nursing or American Association of Critical Care Nurse.
AACE –It is an abbreviation for American Association of Clinical Endocrinologists or Association for the Advancement of Computing in Education.
AAA – It is an abbreviation for abdominal aortic aneurysm, acquired aplastic anemia or American Association of Anatomists.
AA – It is an abbreviation for Alcoholics Anonymous, achievement age ,anaesthesiologist assistant, amplitude of accommodation, amino acid, arm ankle pulse or aortic arch
A68- It is a major subunit of a paired helical filaments which is the derivative of the Tau Protein. It is the protein that is found in the brain tissue of Alzheimer’s disease patients. A68 is also found in the developing brain of the fetus or infants which disappear by the age of 2.