| ARC | accelerating rate calorimetry; acquired immunodeficiency syndrome-related complex; active renin conc... |
|---|---|
| ARCA | acquired red cell aplasia |
| ARRC | Associate of the Royal Red Cross |
| ARS | acquiescence response scale; adult Reye's syndrome; alcohol-related seizures; alizarin red S; Americ... |
| BRB | bright red blood |