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Columnar scatter plot of allelic ratios in cartilage cDNA stratified by genotype at rs6976. Allelic ratios of (A) rs7639267, (B) rs6769789 and (C) rs747343 are shown. n is the number of patients studied for each group. Error bars in each plot represent the mean and the standard error of the mean. The dashed horizontal lines in each plot show an allelic ratio of 1. p-values were calculated using a two-tailed Mann–Whitney exact test for (A) and a Kruskal-Wallis test for (B) and (C).
