Figure 8From: A novel fungus concentration-dependent rat model for acute invasive fungal rhinosinusitis: an experimental study A. Mast cell (MC) degranulation in hyperplastic mucosa of rat maxillary sinus invaded by A. fumigatus (Toluidine blue staining, ×40). B. Mast cell (MC) degranulation in rat nasal septum invaded by A. fumigatus (Toluidine blue staining, ×40). Red arrow indicates MC degranulation. Black arrow indicates A. fumigatus hyphae.Back to article page