Fig. 3From: A novel mice model of acute flares in osteoarthritis elicited by intra-articular injection of cultured mast cellsRepresentative photos presenting distributions of injected MC in the knee joint over time. Immunofluorescence staining (A) 1Â day, (B) 3Â days, and (C) 7Â days after the MC injection. Cells labelled with GFP and MCP-6 were observed in (A) and (B), which demonstrated that exogenous MC existed at that time. MCP-6 positive cells still existed in (C), but GFP positive cells were not observed, suggesting that endogenous MC accounted for the majority 7Â days after the MC injection. Magnification was identical in all 6 panelsBack to article page