“…Several studies have demonstrated an association between the chicken MHC-B haplotype and resistance to various pathogens including Marek's disease virus, avian leukosis virus, Newcastle disease virus, Rous sarcoma virus, and Salmonella (Heinzelmann et al, 1981;Briles et al, 1982;Lamont, 1989;Dunnington et al, 1992;Yoo and Sheldon, 1992;Mays et al, 2005;Kim et al, 2008;Banat et al, 2013). Described in 1950 (Briles et al, 1950), at least 51 B haplotypes of the chicken B complex have been identified using traditional serological techniques (Briles and Briles, 1987;Landesman et al, 1993;Sung et al, 1993;Miller et al, 2004) or gene sequencing, RFLP, single-strand conformational poly-morphism, and SNP (Juul-Madsen et al, 1993;Fulton et al, 2006;Juul-Madsen et al, 2006).…”