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  • Title: Stimulation of cytolytic T lymphocytes by azaguanine-resistant mouse tumor cells in selective HAT medium.
    Author: Van Snick J, Uyttenhove C, Van Pel A, Boon T.
    Journal: J Immunol Methods; 1981; 46(3):321-6. PubMed ID: 6796623.
    Abstract:
    Primed syngeneic or unprimed allogeneic mouse spleen cells were stimulated with azaguanine-resistant P815 tumor cells that were killed by the addition of aminopterin to the stimulation medium. The recovery of lymphocytes and their cytolytic activity and specificity were similar to those obtained after stimulation with irradiated cells. This method conveniently replaces the inactivation of stimulatory cells by irradiation or mitomycin treatment. Moreover, it has the advantage of inactivating not only the stimulatory cells but also the tumor cells that often contaminate the spleens of tumor-bearing animals, provided these animals have been inoculated with azaguanine-resistant tumor cell mutants.
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