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Observations of the appearance (A), small intestine tissues (B), in mice at 53 weeks of age (AC) or 64 weeks of age (AL, ALA, and WC). (B) Histological observations by H&E staining of small intestine tissues. Arrows indicate the destruction of the jejunal epithelium. Original magnification: 200×. Scale bar = 200 μm. AC, AL, or ALA mice were fed a normal diet, containing limonoids alone, and L-arginine + limonoids, respectively. WT mice (WC) were fed a normal diet.
