passages.id: split_8_test_3399_passage
passages.type: progene_text
passages.text: At the allele level , homozygosity was found in 22.1 % , 9.7 % and 12.6 % for KIR2DL4 , KIR3DL2 and KIR3DL1 genes , respectively , but 62.6 % and 53 % for KIR2DL3 and KIR2DS4 genes , respectively , despite the fact that no one allele dominated the frequency in any of these genes .