| ARFC | active rosette-forming T-cell; autologous rosette-forming cell |
|---|---|
| AROM | active range of motion; artificial rupture of membranes |
| ASA | acetylsalicylic acid; active systemic anaphylaxis; Adams-Stokes attack; American Society of Anesthes... |
| AWRU | active wrist rotation unit |
| blH | biologically active luteinizing hormone |