passages.id: split_7_validation_1665_passage
passages.type: progene_text
passages.text: To elucidate the association between killer cell immunoglobulin - like receptors ( KIRs ) and psoriasis vulgaris ( PV ) , we typed 14 KIR genes in 96 Japanese cases and 50 healthy controls using PCR with sequence - specific primers ( PCR - SSP ) .