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Estimation of proportions of hidden tissues from four available data sources. MAQC1: MAQC site 1, MAQC3: MAQC site 3, AFFY:Affymetrix, and GSE19830. (a) Estimated tissue proportions versus true proportions; black represents the DeMix estimates; gray represents LM estimates. (b) Estimated 95% confidence intervals of 
's; solid lines correspond to true π's
