| PNA | Paris Nomina Anatomica; peanut agglutinin; pentosenucleic acid |
|---|---|
| PUM | peanut-reactive urinary mucin |
| AAA | abdominal aortic aneurysm/aneurysmectomy; acne-associated arthritis; acquired aplastic anemia; acute... |
| AAAI | American Academy of Allergy and Immunology |
| AACIA | American Association for Clinical Immunology and Allergy |