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Literature

Immunocytochemical identification of CD5 positive peripheral blood lymphocytes in four marsupial species

L.J. Young,1 E.M. Deane1,2,3

1School of Science, Food & Horticulture, University of Western Sydney

2Co-Operative Research Centre for the Conservation and Management of Marsupials, Macquarie University, New South Wales, Australia

3Division of Environmental and Life Sciences, Macquarie University, North Ryde, New South Wales, 2109, Australia 

ABSTRACT

Immunocytochemical analysis of peripheral blood mononuclear cells was undertaken using a streptavidin biotin–horseradish peroxidase method to detect CD5 positive lymphocytes from the blood of several marsupial species. A monoclonal antibody raised to a conserved peptide sequence of the human CD5 antigen positively labelled lymphocytes in freshly isolated peripheral blood mononuclear cells of the tammar wallaby (Macropus eugenii), the long-footed potoroo (Potorous longipes), the long-nosed potoroo (Potorous tridactylus) and the rufous hare-wallaby (Lagorchestes hirsutus). A polyclonal anti-CD3 antibody also positively labelled circulating lymphocytes from the tammar wallaby. Whereas previous studies using flow cytometry reported labelling of T cells in koala lymphocyte preparations using a polyclonal anti-CD3 antibody, there have been no other reports of marsupial blood immunophenotyping. The current study extends the known applications of monoclonal anti-CD5 and polyclonal anti-CD3 antibodies to blood lymphocytes of small wallaby species using an immunocytochemical slide technique that is simple, can be processed within a day and requires no dedicated large equipment.

 

 

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