| ASC | acetylsulfanilyl chloride; altered state of consciousness; ambulatory surgical center; American Soci... |
|---|---|
| ATLA | adult T-cell leukemia virus-associated antigen; alternatives to laboratory animals |
| AU | according to custom [Lat. ad usum]; allergenic unit; ngstrom unit; antitoxin unit; arbitrary unit; A... |
| Au | Australia [antigen]; authorization; gold [Lat. aurum] |
| Au | Ag Australia antigen |