Linear regression analysis of the correlation between allelic expression ratios for 2 markers. PLT indicates platelets; GNC, granulocytes. Comparison between allelic expression ratios in the same individual, either between markers within the same lineage (A,B) or between lineages (C). Individuals informative for more than one marker were used for comparison of the expression ratios in platelets (A) or granulocytes (B). An identical analysis was performed for comparison of a single marker between platelet and granulocyte lineages, within the same individual (C). Excellent correlations were found between compared values obtained in platelets and granulocytes, with P value less than .001.