<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Parham, Peter</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The genetic and evolutionary balances in human NK cell receptor diversity.</style></title><secondary-title><style face="normal" font="default" size="100%">Semin Immunol</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Semin. Immunol.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Animals</style></keyword><keyword><style  face="normal" font="default" size="100%">Antigens, CD</style></keyword><keyword><style  face="normal" font="default" size="100%">Evolution, Molecular</style></keyword><keyword><style  face="normal" font="default" size="100%">Genetic Variation</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Killer Cells, Natural</style></keyword><keyword><style  face="normal" font="default" size="100%">Receptors, Fc</style></keyword><keyword><style  face="normal" font="default" size="100%">Receptors, KIR</style></keyword><keyword><style  face="normal" font="default" size="100%">Receptors, KIR3DL1</style></keyword><keyword><style  face="normal" font="default" size="100%">Receptors, Natural Killer Cell</style></keyword><keyword><style  face="normal" font="default" size="100%">Reproduction</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2008 Dec</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">20</style></volume><pages><style face="normal" font="default" size="100%">311-6</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;In primates and cattle two ancient killer-cell immunoglobulin-like receptor (KIR) lineages independently evolved to become diverse NK cell receptors. In mice, KIR genes were sidelined to the X chromosome, a possible consequence of pathogen-mediated selection on the receptor for IgA-Fc. In humans, KIR uniquely form two omnipresent haplotype groups (A and B), postulated here to play complementary and necessary roles in immune defense and reproduction. The basis of KIR3DL1/S1 polymorphism is three ancient lineages maintained by long-term balancing selection and present in all human populations. Conserved and variable NK cell receptors produce structurally diverse NK cell receptor repertoires within a defined range of missing-self-response.&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">6</style></issue><custom1><style face="normal" font="default" size="100%">&lt;p&gt;http://www.ncbi.nlm.nih.gov/pubmed/19036608?dopt=Abstract&lt;/p&gt;
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