RESUMO
A peroxidase anti-peroxidase immunohistochemical technique was used to demonstrate IgA-containing cells in the small intestine of lambs infected with Nematodirus battus. These cells were more numerous in the infected lambs than in the uninfected animals. The difference was greatest for the first three sites, 1 to 3 m distal to the pylorus, where the preponderance of the N battus infection is found. It is suggested that future immunohistochemical studies on the relationships between IgA and resistance to N battus should be directed to this area.
Assuntos
Células Produtoras de Anticorpos/imunologia , Imunoglobulina A/análise , Intestino Delgado/imunologia , Doenças dos Ovinos/imunologia , Tricostrongiloidíase/veterinária , Animais , Anticorpos/análise , Imunodifusão/veterinária , Técnicas Imunoenzimáticas , Ovinos , Trichostrongyloidea/imunologia , Tricostrongiloidíase/imunologiaRESUMO
An adaptation of the enzyme-linked immunosorbent assay has been shown to detect antibodies in the circulation of cattle infected with Hypoderma bovis. Strong positive reactions were obtained from all infected cattle, even those which harboured only one larva. A strong cross reaction was observed in sera taken from cattle infected with H lineatum, but not in cattle infected with Fasciola hepatica or Ostertagia ostertagi.