| tRA | all-trans retinoid acid |
|---|---|
| TRA | Theory of Reasoned Action |
| Tra | Transformer |
| Tra | transfer |
| Tra2 | Transformer and Transformer 2 |
| Tra2 | Transformer 2 |
| TRAb | TSH receptor antibody |
| TRAB | TSH receptor antibodies |
| TRAb | Thyrotrophin receptor antibodies |
| TRAb | Thyrotrophin-receptor antibody |