| ATCC | American Type Culture Collection |
|---|---|
| ATD | Alzheimer-type dementia; androstatrienedione; anthropomorphic test dummy; antithyroid drug; aqueous ... |
| BHK | baby hamster kidney [cells]; type-B Hong Kong [influenza virus] |
| BlT | bleeding time; blood test; blood type, blood typing |
| BT | base of tongue; bedtime; bitemporal; bitrochanteric; bladder tumor; Blalock-Taussig [shunt]; bleedin... |