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Toniollo, G. H.; Vicente, W. R. R.; Oliveira, C. A. de; Cippola Neto, J. Evaluation of Thyroxine (T4) and Progesterone-17-Alpha-OH Circadian Rhythm in Swine Females (Sus Scrofa Domestica - Linnaeus, 1758). Braz. J. Vet. Res. Anim. Sci. 1998, 35, 195-197.