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Effects of an interferon inducer, pI:C, on the graft-versus-host reaction

McGill University
Publication Date
  • Biology
  • Animal Physiology.
  • Health Sciences
  • Medicine And Surgery.


PI:C-treatment of recipients, but not donors, before GVHR-induction suppressed the GVHR, an effect seen only with C57BL/6 (B6) and not A donor cells. Using fluorescein-labelled donor cells, pI:C-treatment was seen to cause a marked decrease in donor cell survival after 2 days. Elimination of donor cells was specific for the B6 donor, was associated with increased natural killer (NK) cell but not macrophage cytotoxic activity, was radioresistant and anti-asialo GM1 sensitive, evidence supporting NK-mediated rejection.

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