Cloning and functional characterization of an uncoupling protein homolog in hummingbirds - Vianna, C R; Hagen, T; Zhang, C Y; Bachman, E; Boss, O; Gereben, B; Moriscot, Anselmo Sigari; Lowell, B B; Bicudo, José Eduardo; Bianco, Antônio Carlos (Physiological Genomics, 2001)