| ARV | acquired immunodeficiency syndrome-related virus; anterior right ventricle; avian reovirus |
|---|---|
| ASV | anodic stripping voltammetry; antisiphon valve; antisnake venom; avian sarcoma virus |
| ATLA | adult T-cell leukemia virus-associated antigen; alternatives to laboratory animals |
| ATLV | adult T-cell leukemia virus |
| AYV | aster yellow virus |