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  • Title: Dissociation of correlates of cellular immunity in man: functional heterogeneity within the antigen-reactive cell population?
    Author: Holt PG, Fimmel PJ, Bartholomaeus WN, Roberts LM, Tandon MK, Keast D.
    Journal: Int Arch Allergy Appl Immunol; 1976; 51(5):560-73. PubMed ID: 786903.
    Abstract:
    Cellular immune responsiveness (CMI) to ubiquitous bacterial antigens was assessed in serial peripheral blood samples collected from normal subjects, employing three in vitro correlates of CMI in parallel. Delayed cutaneous hypersensitivity (DCH) was also assessed on a number of occasions in these subjects. These experiments showed that the reactivity of peripheral blood leukocytes from normal individuals as measured in each of the in vitro tests fluctuated from day to day, and that the reactivity of cells functioning in each of the tests fluctuated independently of one another. In contrast, DCH reactivity in these individuals was not subject to such fluctuations. The results are discussed in terms of the periodic appearance of functionally distinct subpopulations of T lymphocytes in the peripheral circulation.
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