Forestomach Tumors in Mice and Rats

The stomach of rats and mice is anatomically different from the human stomach. A part of the stomach in rodents is devoid of glands this part is called the forestomach. The squamous epithelium in the non-glandular rodent forestomach resembles the epithehum covering the esophagus. Therefore, the human esophagus must be regarded as similar with respect to the epithelium of the non-glandular rodent forestomach. 

Toxicological Risk Assessments of Chemicals A Practical Guide 

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