| PTB | patellar tendon bearing; prior to birth |
|---|---|
| PTR | patellar tendon reflex; patient termination record; patient to return; peripheral total resistance; ... |
| FO | Fossa(Foramen) Ovale |
| ACMF | arachnoid cyst of the middle fossa |
| LIF | laser-induced fluorescence; left iliac fossa; left index finger; leukemia-inhibiting factor; leukocy... |