<prompt> MHCll positive cells are. ExceptB cellsT cellsMacrophagePlatelet  <response>: Ref Robbins 7e p203; 9e p194 Ananthanaraya 7e p130 T cells platelet and RBC MHC class II molecules are a class of major histocompatibility complex MHC molecules normally found only on professional antigen-presenting cells such as dendritic cells, mononuclear phagocytes, some endothelial cells, thymic epithelial cells, and B cells. Thesecells are impoant in initiating immune responses. 