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Histological sections of large intestine in 12-month-old mice in the control group (A); and injected with 2.1 mg/kg of ebulin f (B). Normal Lieberkühn’s crypts with mitoses (arrow) can be seen in A; crypts appear atrophic and show apoptosis (arrow) in (B). Hematoxylin and eosin. Magnification ×285.
