Evaluation of preprandial and postprandial serum bile acids and plasma ammonia concentrations in healthy domestic cats and the effects of frozen storage on plasma ammonia concentrations - Kogika, Márcia Mery; Imagawa, Viviane Higuchi; Lucas, Silvia Regina Ricci; Mirandola, Regina Mieko Sakata; Hagiwara, Mitika Kuribayashi (Brazilian Journal of Veterinary Research and Animal Science, 1999)