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Hematoxylin and eosin staining of esophagus in RE rats. Normal control, reflux esophagitis (RE) control—RE + DGK 100 and RE + DGK 200 groups; Normal—untreated rats; RE Control—reflux esophagitis (RE) rats; RE + DGK100—dichloromethane fraction of Geranium koreanum 100 mg/kg body weight-treated RE rats; RE + DGK200—dichloromethane fraction Geranium koreanum 200 mg/kg body weight-treated RE rats (scale bar. 200 μM).
