The biotechnology and pharmaceutical industry is continuing to implement more primary cell based assays in drug discovery due to their biological relevance and there is increased interest in cells of hematopoietic and immunological origin. This webinar will provide an introduction to leukapheresis, a process that can yield large quantities of primary cells from peripheral blood. In addition we will present data on immunological and hematopoietic cells derived from the leukapheresis process.