Reduced neutrophil count in people of African descent is due to a regulatory variant in the Duffy antigen receptor for chemokines gene.
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PLoS Genet. 2009 Jan;5(1):e1000360. doi: 10.1371/journal.pgen.1000360. Epub 2009 Jan 30.
PLoS Genet. 2009.
PMID: 19180233
Free PMC article.