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Barbara Franz: Studies using stressed lab animals are flawed

Dear Editor: For those undecided about whether there needs to additional investigation of experiments on lab animals in Madison, here?s a recent story to consider: The Ohio State Comprehensive Cancer Center decided to study the effect the cage environment itself had on the outcome of mice specifically bred to get cancer. When put in small, barren cages, all the mice got cancer. When put in large cages with all sorts of interesting activities (but the same population density), the mice developed smaller tumors or didn?t get cancer.