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Neutrophil count in individuals with the CC (Duffy-null) and TC/TT genotypes at rs2814778. Density plot of absolute neutrophil count (ANC) in individuals with the CC (Duffy-null) and TC/TT genotypes at rs2814778 and self-reported ethnicity in UK Biobank participants. Other category includes all self-reported ethnicities other than Black African/Caribbean. The dotted grey lines represent the current UK thresholds for the normal adult range of ANC (2.0–7.5 × 109/L).
