Gross-appearance of gastric mucosa in rats: Pretreated with (A) saline (10 mL/kg), (B) ethanol (1 mL/100 g) severe injuries are seen, as ethanol produced excessive hemorrhagic necrosis of gastric mucosa, pretreated with (C) Rumex hastatus crude extract (Rh.Cr 50 mg/kg), (D) Rh.Cr 100 mg/kg, (E) Rh.Cr 300 mg/kg and fractions: (F) n-Hexane (Rh.n-Hex 50 mg/kg), (G) Rh.n-Hex 100 mg/kg, (H) Rh.n-Hex 300 mg/kg, (I) ethyl acetate (Rh.n-ETAC 50 mg/kg), (J) Rh.ETAC 100 mg/kg, (K) Rh.ETAC 300 mg/kg, (L) aqueous (Rh.Aq 50 mg/kg), (M) Rh.Aq 100 mg/kg, (N) Rh.Aq 300 mg/kg, (O) rutin 50 mg/kg, (P) rutin 100 mg/kg, (Q) rutin 200 mg/kg and (R) omeprazole 20 mg/kg.