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MVD in the three groups. MVD reflects the number of microvessels per unit area (mm2). *P<0.05 vs. group I. Group I, control group that was injected with 10 mg/kg saline once per day; group II, experimental group that was injected with 10 mg/kg diammonium glycyrrhizinate (DG) once per day; group III, experimental group that was injected with 10 mg/kg DG twice per day. MVD, microvascular density.
