Figure 2

Nasal mucosa stained with hematoxylin and eosin. A, demonstrates mucus-secreting glands, hemorrhagic foci and lymphocytic infiltration in the mucosa of the inferior turbinate of a healthy subject (×400 magnification); B, lymphoplasmacytic and eosinophil infiltration of the ethmoidal mucosa in a patient with CRSsNP (×400 magnification); C, inset, pseudostratified columnar epithelium with edema of the lamina propria and lymphocytic and eosinophil infiltration of a nasal polyp in a patient with CRSwNP (×100 magnification).