Do the MACS Cytokine Secretion Assays only work with peripheral blood mononuclear cells (PBMCs)?

The MACS Cytokine Secretion Assays are species-specific and work with CD45+ cells, including PBMCs and whole blood. They can also be used with any leukocyte-containing single-cell suspension, such as leukocytes from tissue or cultured cells, provided that the sample contains antigen-presenting cells and responder cells.