| AAK | allo-activated killer |
|---|---|
| ACT | achievement through counseling and treatment; actin; actinomycin; activated clotting time; advanced ... |
| A-LAK | adherent lymphokine-activated killer [cell] |
| APC | acetylsalicylic acid, phenacetin, and caffeine; activated protein C; adenoidal-pharyngeal-conjunctiv... |
| APTT, aPTT | activated partial thromboplastin time |