Effects of Aqueous and Methanolic Extracts of Stem Bark of Alstonia boonei De Wild. (Apocynaceae) on Dextran Sodium Sulfate-Induced Ulcerative Colitis in Wistar Rats

Figure 6

Effects of the aqueous and methanol stem-bark extracts of A. boonei on microphotographs of colon (hematoxylin-eosin, x100). (a) Normal control; (b) negative control; (c) prednisolone (4 mg/kg); (d) aqueous extract (125 mg/kg); (e) aqueous extract (250 mg/kg); (f) methanol extract (125 mg/kg); (g) methanol extract (250 mg/kg). 1: intestinal lumen, 2: mucosa, 3: submucosa, 4: muscularis, 5: serosa, 6: lymphocytic hyperplasia.

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