[Retracted] Metabonomic Study of the Effect of Dingkundan Intervention Comparing with Oral Contraceptives on Primary Dysmenorrhea Using the UPLC-MS Technique

Figure 2

Heatmap of hierarchical clustering for the DKD group and OC group. The abscissa represents different experimental sets, the ordinate represents the differential metabolites clustered, and the color represents the relative content of metabolites in the corresponding sample, red for higher and blue for lower contents.