<prompt> Most potent stimulator of naive T cells -Mature dendritic cellsFollicular dendritic cellsMacrophagesB cell  <response>: Dendritic cells DCs are antigen-presenting cells also known as accessory cells of the mammalian immune system. Their main function is to process antigen material and present it on the cell surface to the T cells of the immune system. They are called professional antigen presenting cells. Reff: Ananthanarayanan Panikers textbook of microbiology 9th edition pg: 138 