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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: Nat Protoc. 2010 Aug 26;5(9):1564–1573. doi: 10.1038/nprot.2010.116

Figure 2.

Figure 2

Ancestry clustering based on genome-wide association data. HapMap3 reference samples: CEU (red), CHB+JPT (purple) and YRI (green). GWA samples: black crosses. 11 cases and 19 controls with a 2nd principal component score less than 0.072 (grey dashed line) were marked for removal.