Veterinária
URI permanente desta comunidadehttps://locus.ufv.br/handle/123456789/11842
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Item Description of lesions in cattle in a natural outbreak of Babesia bovis infection in Brazil(Veterinary Parasitology, 1982-12) Patarroyo, J. H.; Vargas, M. I.; Bicudo, P. L.This paper describes the pathologic features of a natural infection by Babesia bovis (B. argentina) in Brazil. Microscopic examination of cerebrum, midbrain, cerebellum, liver, kidney, heart and spleen of five fatal cases revealed variable degrees of congestion, particularly in the brain, liver and kidney. The packing of erythrocytes, the majority of which were parasitized, was most marked in the capillaries of brain, kidney and less in liver. Lymphocytic glomerulonephritis was observed. Variable degrees of fatty degeneration were noted in the liver, distention of hepatic canaliculi and biliary retention was marked. A strong activation of the mononuclear phagocytic system was evident in all the subjects studied.Item Early chronic low-level methylmercury poisoning in monkeys impairs spatial vision(Science, 1982-05-14) Rice, D.C.; Gilbert, S. G.Five monkeys were treated from birth with oral doses of mercury as methylmercury (50 micrograms per kilogram of body weight per day); concentrations in the blood peaked at 1.2 to 1.4 parts per million; and declined after weaning from infant formula to a steady level of 0.6 to 0.9 part per million. There were no overt signs of toxicity. When tested between 3 and 4 years of age under conditions of both high and low luminance, treated monkeys exhibited spatial vision that was impaired compared with that of control monkeys.