Pathogen selection drives nonoverlapping associations between HLA loci. Author(s): Penman BS, Ashby B, Buckee CO, Gupta S|Journal: Proc Natl Acad Sci U S A|PMID: 24225852| November 2013 Pathogen-mediated selection is commonly invoked as an explanation for the exceptional polymorphism of the HLA gene cluster, but its role…