| TLA | thymus leukemia antigen; tissue lactase activity; tongue-to-lip adhesion; translaryngeal aspiration;... |
|---|---|
| TTL | total thymus lymphocytes; transistor-transistor logic |
| EDRF | Endothelium Derived Relaxing Factor |
| ENKAF | Epidermal-derived NK cell-Activating Factor |
| ETAF | Epidermal cell derived Thymocyte Activating Factor |