<prompt> The professional antigen presenting cells areEndothelial cellsDendritic cellsT cellsB cells  <response>: Professional APC Express MHC class II molecules Dendritic cells Immature dendritic cells Langerhans cells Macrophages B cells Non - professional APC Do not express MHC class II molecules Stimulated by cytokines like IFN Fibroblasts Thymic epithelial cells Thyroid epithelial cells Glial cells Pancreatic beta cells Endothelial cells 