| AVA | activity vector analysis; antiviral antibody; aortic valve area; aortic valve atresia; arteriovenous... |
|---|---|
| aw | airway; water activity |
| BA | Bachelor of Arts; backache; bacterial agglutination; basilar artery; basion; benzyladenine; best amp... |
| BAP | bacterial alkaline phosphatase; Behavior Activity Profile; beta-amyloid peptide; blood-agar plate; b... |
| BEA | below-elbow amputation; bioelectrical activity; bromoethylamine |