| ISR | information storage and retrieval; Institute for Sex Research; Institute of Surgical Research; insul... |
|---|---|
| NIA | National Institute on Aging; nephelometric inhibition assay; niacin; no information available; Nutri... |
| AAA | abdominal aortic aneurysm/aneurysmectomy; acne-associated arthritis; acquired aplastic anemia; acute... |
| ABP | actin-binding protein; ambulatory blood pressure; American Board of Pedodontics; American Board of P... |
| ACCP | American College of Chest Physicians; American College of Clinical Pharmacology; American College of... |