| AuHAA | Australia hepatitis-associated antigen |
|---|---|
| AuP | Australian antigen protein |
| BAC | bacterial adherent colony; bacterial antigen complex; blood alcohol concentration; British Associati... |
| BCA | balloon catheter angioplasty; bicinchoninic acid; blood color analyzer; Blue Cross Association; bran... |
| B/F | black female; bound/free [antigen ratio] |