This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
In Rheumatoid ahritis, which type of cells are prominently present ? 
Select and explain. 
A. B cells, B. T cells, C. Macrophages, D. Dendritic cells
B: T cells
Answer: B: T cells 
Explanation: * 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