| PG | Pineal Gland |
| TG | Thymus Gland |
| TG-PG axis | Thymus-Pineal Axis |
| ROS | Reactive Oxygen Species |
| NAD+ | Nicotinamide Adenine Dinucleotide |
| SIRT1 | Directory Of Open Access Journals |
| MT | Melatonin |
| miRNAs | MicroRNAs |
| circRNAs | miRNA-Sponging Circular RNAs |
| DBP | D-Box-Binding Protein |
| ETP cells | Early T Lineage Progenitor Cells |
| LIF | Leukemia Inhibitory Factor |
| OSM | Oncostatin M |
| GnRH | Gonadotropin Releasing Hormone |
| LH | Luteinizing Hormone |
| FSH | Follicle Stimulating Hormone |
| GH | Growth Hormone |
| IGF-1 | Insulin-Like Growth Factor-1 |
| SASP | Senescence-Associated Phenotype |
| FTS | Facteur Thymique Sérique - Thymulin |
| RE | Reticulo-Epithelial Tissue |
| ACTH | Adrenocorticotropic Hormone |
| TSH | Thyroid-Stimulating Hormone |
| sEAE | Severe Experimental Autoimmune Encephalomyelitis |
| TF3 | Thymosin Fraction-3 |
| TF5 | Thymosin Fraction-5 |
| Tβ4 | Thymosin Β4 |
| Tβ10 | Thymosin Β10 |
| Tα1 | Thymalfasin - Thymosin Α1 |
| ProTα | Prothymosin Α |
| INF-α | Interferon-Α |
| TRH | Thyrotropin Releasing Hormone |
| CRH | Corticotropin-Releasing Hormone |
| TP (TMPO) | Thymopoietin |
| LAP2 | Lamin-Associated Polypeptide 2 |
| HDAC1 | Histone Deacetylase 1 |
| TPα | Thymopoietin α |
| TPβ | Thymopoietin β |
| TPγ | Thymopoietin γ |
| HSP70 | Heat Shock Protein 70 |
| HSP90 | Heat Shock Protein 90 |
| THF | Thymic Humoral Factor |
| THF-γ2 | Thymic Humoral Factor-Γ2 |
| GFAP | Glial Cell Fibrillary Acid Protein |
| NPY | Neuropeptide Y |
| PACAP | Pituitary Adenylylcyclase Activating Peptide |
| VIP | Vasoactive Intestinal Polypeptide |
| Nd | Nuclear Density |
| MAO A | Monoamine Oxidase A |
| MAO B | Monoamine Oxidase B |
| AVT | Arginine Vasotocin |
| TRH-IF | TRH Inhibitory Factor |
| TPH | Tryptophan Hydroxylase |
| AADC | Aromatic Amino Acid Decarboxylase |
| AA-NAT | Aralkylamine-N-Acetyltransferase |
| THF | Thymic Humoral Factor |
| ASMT (HIOMT) | N-Acetylserotonin-O-Methyltransferase (Hydroxyindole-O-Methyltransferase) |
| SCN | Suprachiasmatic Nucleus |
| GIT | Gastro-Intestinal Tract |
| NQO2 | NRH Quinone Oxidoreductase 2 |
| CaM | Calmodulin |
| RORs | Retinoid Orphan Receptors |
| 5-HT | 5-hydroxytryptamine |
| NAS | N-acetylserotonin |
| PKA | Protein Kinases A |
| CREB | cAMP Response Element-Binding Protein |