passages.id: split_4_test_2731_passage
passages.type: progene_text
passages.text: Simultaneous ligation of CD158a , CD158b and KIR3DL1 caused an overall partial inhibition of CD56 ( + ) T cell cytotoxic activity , suggesting that the observed reductions in KIR ( + ) cell numbers in malignancy are likely to lead to enhanced cytotoxicity .