Fat mice tell little

Separate reports delving further into two obesity-related gene defects in mice have shed only a little more light on what could cause humans to become overweight. Neither the ob or fat mouse gene appears to be a clear factor in human obesity.

The ob gene found in mice is not defective in obese humans, researchers at Jefferson Medical College reported in the Journal of Clinical Investigation. Meanwhile, another mouse gene, fat, maps to, and appears to be coding, the enzyme that cleaves