Fig. 1From: In-depth metaproteomics analysis of tongue coating for gastric cancer: a multicenter diagnostic research studySchematic view of the study. A The main components of tongue coating and cohort information included in this study. B Process of constructing the tongue-coating protein database. C Construction of the spectral library of tongue-coating proteins. D Tongue-coating protein identification and quantification workflow based on PCT-DIABack to article page