| CT | Cytotrophoblast |
| ST | Syncytiotrophoblast |
| EVT | Extravillous trophoblast |
| HLA | Human Leukocyte Antigen |
| MHC | Major Histocompatibility Complex |
| dNK | Decidual natural killer cells |
| EVs | Extracellular vesicles |
| STEVs | Syncytiotrophoblast-derived extracellular vesicles |
| PE | Pre-eclampsia |
| KIRs | Killer cell Ig-like receptors |