Fig. 2From: Serum proteomics unveil characteristic protein diagnostic biomarkers and signaling pathways in patients with esophageal squamous cell carcinomaProteomic profiling of ESCC patients and healthy controls. AÂ Principal component analysis in both groups. B Heatmap analysis of expression profile of proteins. C The distribution of protein abundance ratios. The fold changes of ESCC/control are shown in log2 scale on the x-axis, and the numbers of proteins are shown on the y-axis. D Rank plots show the top increased and decreased proteins in the ESCC groupBack to article page