| AgNOR | argyrophilic nuclear organiser region |
|---|---|
| Arnt | Aryl hydrocarbon receptor nuclear translocator |
| AcMNPV | Auographa californica multicapsid nuclear polyhedrosis virus |
| AcNPV | Autographa Californica nuclear polyhedrosis virus |
| AcMNPV | Autographa california nuclear polyhedrosis virus |