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  • Title: Identification of Leishmania donovani amastigotes in canine tissues by immunoperoxidase staining.
    Author: Ferrer L, Rabanal RM, Domingo M, Ramos JA, Fondevila D.
    Journal: Res Vet Sci; 1988 Mar; 44(2):194-6. PubMed ID: 3291029.
    Abstract:
    This paper describes the demonstration of Leishmania donovani amastigotes in canine tissues by immunoperoxidase staining. An indirect immunoperoxidase method was applied to the organs of 20 dogs in which leishmaniasis was previously diagnosed. Haemosiderin pigment was eliminated with 5 per cent oxalic acid. Amastigotes of L donovani appeared as dark brown stained bodies which contrasted with haematoxylin stained host cells. No positively stained amastigotes could be seen in any of the sections incubated with control serum. The organs which more frequently showed leishmanids were: skin (macrophages and fibroblasts), liver, spleen, lymph nodes and bone marrow. In a few cases amastigotes were seen in kidneys, gut, adrenal glands, eyes and testicles. This technique is simple to perform, gives consistent results and allows unequivocal histopathological diagnosis of canine leishmaniasis.
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