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  • Title: Use of an antiserum specific for human T lymphocytes as a diagnostic reagent: comparison with E rosette formation and mitogenic response to PHA.
    Author: Zola H, Valdimarsson H.
    Journal: Br J Haematol; 1978 Aug; 39(4):607-14. PubMed ID: 308814.
    Abstract:
    An antiserum with specificity for human T lymphocytes was evaluated as a diagnostic reagent in the clinical immunology laboratory. The antiserum was used in indirect immunofluorescence to detect T cells in blood samples from normal controls and patients with various disorders involving the immune system. The same samples were also examined using two established tests for T cells, the rosette reaction with sheep red blood cells (E rosette assay) and the proliferative response to phytohaemagglutinin (PHA). The antiserum and the rosette assay detected approximately the same numbers of T cells in controls, but the antiserum indicated T cell deficiency in several patients who appeared normal by rosetting or PHA reactivity. PHA stimulation in autologous plasma was depressed in a further group of patients who had normal T cell numbers by the other two tests. In vitro experiments with normal lymphocytes indicated that the E-rosette receptor was distinct from determinants detected by the T-cell specific antiserum. The immunofluorescence test with the anti-T serum provides an additional assay which appears to be more sensitive than the other two tests in detecting certain cases of T lymphocyte deficiency.
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