| SmIg | surface membrane immunoglobulin |
|---|---|
| TBII | thyroid-stimulating hormone-binding inhibitory immunoglobulin |
| TFE | polytetrafluoroethylene; transcription factor for immunoglobulin heavy chain enhancer |
| TIG, Tig | tetanus immunoglobulin |
| TSI | thyroid stimulating immunoglobulin; triple sugar iron [agar] |