| ACA | abnormal coronary artery; acrodermatitis chronica atrophicans; acute cerebellar ataxia; adenocarcino... |
|---|---|
| AES | acetone-extracted serum; American Electroencephalographic Society; American Encephalographic Society... |
| ACP | accessory conduction pathway; acid phosphatase; acyl carrier protein; American College of Pathologis... |
| AAN | AIDS-associated nephropathy; alpha-amino nitrogen; American Academy of Neurology; American Academy o... |
| ADA | adenosine deaminase; American Dental Association; American Dermatological Association; American Diab... |