| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P42160 | Interferon gamma; IFN-gamma; | IFNG; | NP_001075418.1; | 166 | horse |
| P05001 | Interferon omega-1; Interferon alpha-II-1; | NULL | NP_001077064.1; | 195 | horse |
| P05002 | Interferon omega-2; Interferon alpha-II-2; | NULL | NP_001108008.1; | 195 | horse |
| P51458 | Insulin-like growth factor I; IGF-I; Somatomedin; Fragment; | IGF1; | NULL | 122 | horse |
| P51459 | Insulin-like growth factor II; IGF-II; Somatomedin-A; [Cleaved into: Insulin-like growth factor II; Preptin]; | IGF2; | NP_001108011.1; | 181 | horse |
| Q28374 | Interleukin-10; IL-10; Cytokine synthesis inhibitory factor; CSIF; | IL10; | NP_001075959.1; | 178 | horse |
| Q9XSQ6 | Interleukin-12 subunit alpha; IL-12A; Cytotoxic lymphocyte maturation factor 35 kDa subunit; CLMF p35; IL-12 subunit p35; | IL12A; | NP_001075980.1; | 222 | horse |
| Q9XSQ5 | Interleukin-12 subunit beta; IL-12B; Cytotoxic lymphocyte maturation factor 40 kDa subunit; CLMF p40; IL-12 subunit p40; | IL12B; | NP_001075985.1; | 329 | horse |
| Q9XSQ7 | Interleukin-18; IL-18; Interferon gamma-inducing factor; IFN-gamma-inducing factor; Interleukin-1 gamma; IL-1 gamma; | IL18; IGIF; | NP_001075981.1;XP_005611483.1;XP_005611484.1; | 193 | horse |
| Q28385 | Interleukin-1 alpha; IL-1 alpha; | IL1A; | NP_001075969.1; | 270 | horse |
| Q28386 | Interleukin-1 beta; IL-1 beta; | IL1B; | NP_001075995.1; | 268 | horse |
| O18999 | Interleukin-1 receptor antagonist protein; IL-1RN; IL-1ra; IRAP; IL1 inhibitor; | IL1RN; IL1RA; | NP_001075994.1; | 177 | horse |
| Q64FU1 | Interleukin-23 subunit alpha; IL-23 subunit alpha; IL-23-A; Interleukin-23 subunit p19; IL-23p19; | IL23A; | NP_001075991.1;XP_005611135.1;XP_005611136.1; | 192 | horse |
| P37997 | Interleukin-2; IL-2; T-cell growth factor; TCGF; | IL2; | NP_001078902.1; | 149 | horse |
| Q6WG24 | Interleukin-4 receptor subunit alpha; IL-4 receptor subunit alpha; IL-4R subunit alpha; IL-4R-alpha; IL-4RA; CD antigen CD124; | IL4R; | NP_001075243.1; | 809 | horse |
| P42202 | Interleukin-4; IL-4; B-cell stimulatory factor 1; BSF-1; Lymphocyte stimulatory factor 1; | IL4; | NP_001075988.1; | 134 | horse |
| O02699 | Interleukin-5; IL-5; Eosinophil differentiation factor; T-cell replacing factor; TRF; | IL5; | NP_001075968.1; | 134 | horse |
| Q95181 | Interleukin-6; IL-6; | IL6; | NP_001075965.1; | 208 | horse |
| A0MSX9 | Interleukin-7 receptor subunit alpha; IL-7 receptor subunit alpha; IL-7R subunit alpha; IL-7R-alpha; IL-7RA; CD antigen CD127; | IL7R; | NP_001075411.1; | 458 | horse |
| O62812 | Interleukin-8; IL-8; C-X-C motif chemokine 8; Chemokine (C-X-C motif) ligand 8; | CXCL8; IL8; | NP_001077420.1; | 101 | horse |
