1.   After the genetically obese mouse at left was surgically joined to a normal mouse, the fat mouse began to eat less and lose weight.

2.   Coleman was studying a strain of genetically obese mice that weighed three times as much as normal mice.

3.   Scientists have gotten genetically obese mice to lose a third of their weight in two weeks by injecting them with a newly discovered hormone that regulates body fat.

4.   The gene was isolated from two strains of genetically obese mice, said Dr. Jeffrey M. Friedman, a molecular biologist at the New York university.