| PTB | patellar tendon bearing; prior to birth |
|---|---|
| PWB | partial weight bearing |
| TB | Taussig-Bind [syndrome]; terabyte; term birth; terminal bronchiole; terminal bronchus; thromboxane B... |
| TBA | tertiary butylacetate; testosterone-binding affinity; tetrabutylammonium; thiobarbituric acid; to be... |
| TBR | tumor-bearing rabbit |