Mean-mean plots for MAQC group A ILM and AFX data after cross-platform normalization. Scatter or sunflower plots for MAQC treatment group A for each normalization method for the ILM and AFX data. Mean expression level of sample A assays on the AFX platform is plotted against mean expression level on the ILM platform. Plot titles indicate the cross-platform normalization method performed. Red lines are the line y = x, provided for visual comparison. Sub-titles indicate the r2 value for the plot.