Figure 4From: Integrated multi-level quality control for proteomic profiling studies using mass spectrometryDuplicate proteomic profiles (technical replicates) of 5 biological samples in the study. In the left hand panel the first technical replicate is shown with the black solid line and the second technical replicate with the red dotted line and in the right hand panel the second technical replicate is shown with the black solid line and the first technical replicate with the red dotted line. The axes are equivalent in each plot and the mass axes apply to all plots.Back to article page