Abstract:Soluble exoantigens of Trypanosoma lewisi were obtained from short-culture systems of dividing epimastigotes and non-dividing trypomastigotes incubated in phosphate-buffered saline glucose solution (PBSG) for 3 h at 37 degrees C. Suppression of normal rat-spleen cell responses to mitogen concanavalin A (Con A) occurred at high exoantigens concentrations. The epimastigote-derived exoantigens were more suppressive than the trypomastigote-derived exoantigens. The suppression of Con A stimulation was ablated by th… Show more
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