Fig. 4

Neurofibromin immunostaining in salivary glands. a Minor salivary gland. Weak to moderate cytoplasm positivity for neurofibromin in the apical portion of the mucous acinar cells (arrows) and cytoplasm moderate positivity in the ductal cells (arrowheads). Scale bar: 90 µm. b Submandibular gland. Moderate to strong positivity for neurofibromin in the cytoplasm of the serous acinar cells and apical portions of the mucous acinar cells (arrows). Moderate positivity in the cytoplasm of the ductal cells (arrowheads). Scale bar: 100 µm. c Sublingual gland. Moderate to strong positivity for neurofibromin in the cytoplasm of the serous acinar cells (arrows) and moderate positivity in the cytoplasm of the ductal cells (arrowheads). Scale bar: 100 µm. d Parotid gland. Weak positivity for neurofibromin in the cytoplasm of the apical portion of the serous acinar cells (arrows). Moderate positivity in the cytoplasm of the ductal cells. (arrowheads). Scale bar: 2mm. Microscope objective used for scanning: ×40