Rat weight, but not total body fat, is increased after housing in the Marlau™ cage. A.

<p>After 4 weeks in the Marlau™ cage, “enriched” rats had an increase in body weight that was significantly greater than that of rats raised in conventional conditions (n = 12 in each group). <b>B.</b> Total body fat percentage measured at termination time was not altered by housing conditions (n = 8 in each group). All results are expressed as the mean ± SEM. Abbreviations: Cv, rats in conventional cages; En, rats in Marlau™ cages.</p>

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