Leptin increases energy expenditure and selectively promotes fat metabolism in ob/ob mice. - Hwa,J.J.; Fawzi,A.B.; Graziano,M.P.; Ghibaudi,L.; Williams,P.; van Heek,M.; Davis,H.; Rudinski,M.; Sybertz,E.; Strader,C.D. (Am J Physiol Regulatory Integrative Comp Physiol, 1997)