Fig. 2.

Principal component analysis (PCA) of carrier frequency of nine variable KIR genes. The PCA graph built upon the frequencies of individuals carrying nine variably occurring KIR genes (2DL1-3, 2DS1-4, 3DL1, and 3DS1) shows a global view relationship between the four Iranian populations studied in this paper and other previously reported world populations. The other seven genes (2DL5, 2DS5, 2DL4, 3DL2, 3DL3, 2DP1, and 3DP1) were excluded from the analysis because they were either invariably present in all individuals or not typed in some populations. Jap Japanese, Chi Han Chinese, Kor Korean, SpC Singapore Chinese, Hui Huichol, Pur Purepecha, Tar Tarahumara, Chg Chiriguanos, Wic Wichis, War Warao, Bar Bari, AmA Amazonian Amerindian, Yuc Yucpa, Vie Vietnamese, Tha Thai, Reu Reunion, Gre Greek, CkI Cook Island, Sam Samoan, Tok Tokelau, Ton Tongan, Mez Mestizo, Bri British Caucasian, Aus Australian Caucasian, NIr Northern Irish, NY New York Caucasian, Fin Finnish, Fre French Caucasian, AmC American Caucasian, SpM Singapore Malay, His Hispanic, MK Mollukurumba, SAf Senegal African, GuC Guadeloupe Caribbean, AfA African American, AfC Afro-Caribbean, Per Persian, Bak Bakhtiari, Arb Iranian Arab, Aze Azeri, Pal Palestinian Arab, Mah Maharashtrian, Tri Trinidad Asian, Pak Pakistani, NIn North Indian, Par Paravar, Kan Kanikar, InP Indian Parsi, Bas Basque population, SpI Singapore Indians, AuA Australian Aborigine