IL4 and autoimmune thrombocytopenic purpura: To this end, splenocytes from HIV-ITP- (n = 4), HIV-ITP+ (n = 3), HIV+ITP- (n = 4) and HIV+ITP+ (n = 5) were activated using PHA and secretion of IL-10, IL-4, Il-6 and IL-1ß were quantified (Fig 4).