Abstract background Mast cell infiltration in oral submucous fibrosis (OSMF) has been drawn in to play a definitive role in initiation. progression. and symptom like burning sensation. Degranulation products of mast cells like tryptase and chymase have been studied through immunochemistry. https://www.roneverhart.com/Medline-K4-Wheelchair-Basic-Lightweight-Wheelchairs/