| Term | Definition / Meaning / Stand for |
| TRA |
T-cell Receptor Alpha |
| TRB |
T-cell Receptor Beta |
| TUX |
T-cell-Related Upstream Protein |
| TH1 |
T-helper 1 Cell |
| TH17 |
T-helper 17 Cell |
| TH |
T-helper Cell |
| TAF |
TATA-Box Binding Protein-Associated Factor |
| TDP |
TATA-Box Binding Protein-Associated Factor |
| TATA |
TATA-Box Binding Protein |
| TIGAR |
TP53-Induced Glycolysis and Apoptosis Regulator |
| TRE |
TPA-Responsive Element |
| TORC |
Target of Rapamycin Complex |
| TTA |
Targeting Transcriptional Activation |
| TRL |
Telomere Length |
| TRF |
Telomere Repeat Factor |
| TRC |
Telomeric Repeat Containing Gene |
| TO |
Teratogenicity |
| TFL |
Terminal Flower |
| TUNEL |
Terminal deoxynucleotidyl transferase dUTP nick end labeling |
| TAC |
Ternary Complex |
| TWL |
Tethered Wound Ligand |
| TNP |
Tetra-Nitro-Pyrrole |
| TPT |
Tetrahydropyran-3-yl Triazolopyridine |
| TWH |
Tetrahymena Whole Cell |
| TTC |
Tetratricopeptide Repeat Containing |
| TAL |
Thalassemia |
| TXNIP |
Thioredoxin-Interacting Protein |
| TXN |
Thioredoxin |
| TGA |
Threonine-Glycine-Arginine |
| TSP |
Thrombospondin |
| TXB2 |
Thromboxane B2 |
| TP |
Thymidine Phosphorylase |
| TMP |
Thymidylate Synthase |
| TR |
Thyroid Receptor |
| TIMP |
Tissue Inhibitor of Metalloproteinases |
| TRM |
Tissue Resident Memory |
| TIR |
Toll/Interleukin-1 Receptor |
| TOP |
Topoisomerase |
| TPE |
Total Protein Extract |
| TVD |
Total Viral DNA |
| TAR |
Transactivation Response |
| TFB |
Transcription Factor B |
| TFC |
Transcription Factor Complex |
| TFE |
Transcription Factor E |
| TF |
Transcription Factor |
| TSS |
Transcription Start Site |
| TEF |
Transcriptional Elongation Factor |
| TRN |
Transcriptional Regulatory Network |
| TZN |
Transcriptional Zone Nucleus |
| TGH |
Transglutaminase |
| TRPV |
Transient Receptor Potential Vanilloid |
| TMEM |
Transmembrane Protein |
| TMR |
Transmembrane Receptor |
| TAP |
Transporter Associated with Antigen Processing |
| TE |
Transposable Element |
| TV |
Transverse Vibration |
| TVD |
Truncated Viral DNA |
| TUB |
Tubulin |
| TME |
Tumor Microenvironment |
| TZE |
Tumor Zone Extract |
| TZM |
Tumor Zone Marker |
| TZO |
Tumor Zone Oscillation |
| TWF |
Twinfilin |
| TYRO |
Tyrosine Kinase Receptor |
| TMBA |
3,4,5-trimethoxybenzoic Acid |
| TG2 |
Anti-transglutaminase 2 |
| trkB |
BDNF-tyrosine Kinase B Receptor |
| TcII |
Critical Temperature |
| Tyr |
Cy-tRNA |
| TSOX |
Heterotetrameric Sarcosine Oxidase |