The p30-15 monoclonal antibody recognizes CD337 also known as activating NK receptor NKp30 (NKp30), and natural cytotoxicity triggering receptor 3. NKp30 is a type I transmembrane protein, member of the natural cytotoxicity receptor family that contains one immunoglobulin-like domain. NKp30 has an apparent molecular weight of 30 kD and six isoforms are produced by alternative splicing. NKp30 is expressed on IL-2 activated NK cells and NK cell lines as well as some in vitro activated (gamma)/(delta) T cells. NKp30 enhances NK cell triggering and cytolysis of tumor targets and other target cells deficient in MHC class I molecules. NKp30 has been shown to associate with CD59 and TCR?. The p30-15 antibody against human NKp30 has been shown to be useful for flow cytometry, stimulation of human NK cells via NKp30 in a redirected lysis assay, and blocking of NKp30 function in solution.