Fig. 3From: Serum biomarkers of the calcium-deficient rats identified by metabolomics based on UPLC/Q-TOF MS/MSHeatmap of the identified 24 biomarkers of calcium deficiency in serum. Rows: biomarkers; columns: samples. Green: NCG; red: LCG. The color key indicates the metabolite expression value: dark blue, lowest; dark red, highestBack to article page