dNK cells subtypes | Expression of KIR | Cytoplasmic granule proteins | Activating killer cell lectin-like receptor (NKG2C, NKG2E) and inhibiting NKG2A) | Chemokine | Function in pregnancy |
dNK1 | Higher | ↑ | + | − | plays a dominant role in early pregnancy |
dNK2 | low | ↓ | + | XCL1 | recruitment of EVTs and dendritic cells |
dNK3 | low | ↓ | − | chemokine ligand 5 | regulation of EVT invasion |