<prompt> In Rheumatoid ahritis, which type of cells are prominently present ?B cellsT cellsMacrophagesDendritic cells  <response>: Synol lining or intimal layer: Normally, this layer is only 1-3 cells thick. In RA, this lining is greatly hyperophied 8-10 cells thick. Primary cell populations in this layer are fibroblasts and macrophages REF : MAHESHWARI 9TH ED 