| BCG | Bacillus Calmette–Guerin |
| HELIX | The Human Early Life Exposome |
| DC | Dendritic cell |
| NK | Natural killer cells |
| LPS | Lipopolysaccharide |
| TLR | Toll-like receptor |
| HSC | Hematopoietic stem cells |
| MPP | Multipotent progenitors |
| MTB | Mycobacterium tuberculosis |
| HFD | High-fat diet |
| MCMV | Mouse cytomegalovirus |
| IL | Interleukin |
| oxLDL | Oxidized low-density lipoprotein |
| HAT | Histone acetyltransferase |
| HMT | Histone methyltransferase |
| MTA | Methylthioadenosine |
| EGCG | Epigallocatechin-3-gallate |
| ROS | Reactive oxygen species |
| TF | Transcription factor |
| DPT | Diphtheria, pertussis, and tetanus |
| MV | Measles vaccine |
| 5mC | 5-methylcytosine |
| 5hmc | 5-hydroxymethylcytosine |
| SARS-CoV-2 | Severe acute respiratory syndrome coronavirus 2 |
| COVID-19 | Coronavirus Disease 2019 |