| B-l | bursa-equivalent lymphocyte |
|---|---|
| PTB | patellar tendon bearing; prior to birth |
| PTR | patellar tendon reflex; patient termination record; patient to return; peripheral total resistance; ... |
| ECG | Electro-Cardio-Graphy(-Gram); 심전도 = EKG 1. Conducting System Structu... |
| MEC | median effective concentration; middle ear canal; middle ear cell; minimum effective concentration |