Size distribution of colonic and small intestinal lesions of A/J Min/+ mice fed two different rodent diets.

<p>A) flat ACF and tumors in the colon, and B) tumors in the small intestine of animals fed (▼) AIN-93M for 11 weeks, (●)RM1 for 11 weeks, or (○) RM1 for 25 weeks. The smallest size class contained lesions with 1–4 crypts. One crypt had an area of 0.002mm². In the colon, lesions are considered tumors if they contain more than 30 crypts/lesion (approximately 0,4mm²).