Problem: Detailed analysis of the expression of natural killer (NK) cell activatory and inhibitory receptors by human decidual leukocyte subpopulations has not been undertaken.
Method Of Study: Expression of the natural cytotoxicity receptors NKp30, NKp44 and NKp46 by decidual leukocytes were studied by reverse transcriptase polymerase chain reaction. Expression of the killer cell Ig-like receptors CD158a and CD158b on decidual T cells were studied by flow cytometry.