| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| O19011 | Transforming growth factor beta-1; TGF-beta-1; [Cleaved into: Latency-associated peptide (LAP)]; | TGFB1; | NP_001075318.1; | 390 | horse |
| O97508 | Thioredoxin; Trx; | TXN; | NP_001075282.1; | 105 | horse |
| O02722 | Metalloproteinase inhibitor 1; Tissue inhibitor of metalloproteinases 1; TIMP-1; | TIMP1; | NP_001075984.1; | 207 | horse |
| O77717 | Metalloproteinase inhibitor 2; Tissue inhibitor of metalloproteinases 2; TIMP-2; Fragment; | TIMP2; TIMP-2; | NULL | 91 | horse |
| Q9TUL9 | Metalloproteinase inhibitor 3; Tissue inhibitor of metalloproteinases 3; TIMP-3; | TIMP3; | NP_001075339.1; | 211 | horse |
| P67933 | Substance P; | TAC1; NKA NKNA TAC2; | NULL | 11 | horse |
| Q6T752 | Toll-like receptor 2; CD antigen CD282; | TLR2; | NP_001075265.1; | 784 | horse |
| Q9MYW3 | Toll-like receptor 4; CD antigen CD284; | TLR4; | NP_001093239.1; | 843 | horse |
| P29553 | Tumor necrosis factor; Cachectin; TNF-alpha; Tumor necrosis factor ligand superfamily member 2; TNF-a; [Cleaved into: Tumor necrosis factor, membrane form (N-terminal fragment) (NTF); Intracellular domain 1 (ICD1); Intracellular domain 2 (ICD2); C-domain 癷?癸 | TNF; TNFA TNFSF2; | NP_001075288.1; | 234 | horse |
| Q5PYI0 | Troponin I, cardiac muscle; Cardiac troponin I; | TNNI3; | NP_001075373.1; | 205 | horse |
| Q3ZTK5 | Tumor necrosis factor receptor superfamily member 5; B-cell surface antigen CD40; CD40L receptor; CD antigen CD40; | CD40; TNFRSF5; | NP_001075371.1; | 280 | horse |
| Q0EAB8 | Tryptophan 5-hydroxylase 2; EC 1.14.16.4; Tryptophan 5-monooxygenase 2; | TPH2; | NP_001075252.1; | 491 | horse |
| P02561 | Tropomyosin alpha-4 chain; Platelet beta tropomyosin; Tropomyosin-4; | TPM4; | NULL | 248 | horse |
| Q3BCR6 | Thiopurine S-methyltransferase; EC 2.1.1.67; Thiopurine methyltransferase; | TPMT; | NP_001075374.1; | 245 | horse |
| P27425 | Serotransferrin; Transferrin; Beta-1 metal-binding globulin; Siderophilin; | TF; | NP_001075415.1; | 706 | horse |
| O77811 | Lactotransferrin; Lactoferrin; EC 3.4.21.-; Fragment; | LTF; | NULL | 695 | horse |
| Q28376 | Thyrotropin subunit beta; Thyroid-stimulating hormone subunit beta; TSH-B; TSH-beta; Thyrotropin beta chain; | TSHB; | NP_001075960.1; | 138 | horse |
| P63314 | Thymosin beta-10; | TMSB10; PTMB10 THYB10; | NP_001075334.1; | 44 | horse |
| P62327 | Thymosin beta-4; T beta-4; [Cleaved into: Hematopoietic system regulatory peptide (Seraspenide)]; | TMSB4; THYB4; | NP_001157420.1; | 44 | horse |
| Q8MKD1 | Polyubiquitin-B; [Cleaved into: Ubiquitin; Ubiquitin-related]; | UBB; | NP_001075331.1; | 305 | horse |
