Figure 1 : A photomicrograph of buccal mucosa stained with hematoxylin and eosin.

(a) Buccal mucosa section from group I showing the buccal mucosa with normal keratinized (arrow), stratified squamous epithelium (E) exhibiting rete ridges (R) and well organized lamina propria (L)[H&E,X400,scale bar=25 μm]. (b) Buccal mucosa from group II showing apparent decrease thickness of epithelium (E) with separation of keratin (arrow). Cytoplasmic perinuclear vacuolization of some epithelial cells (▲ arrow head), while others show deeply stained nuclei (↑↑) or fragmentation and loss of nuclei (*). Areas of degeneration are seen in lamina propria (L)[H&E, X400,scale bar = 25 μm]. (c) Buccal mucosa from group II showing hemorrhage (H), focal erosion of squamous epithelium at ulcer area (U) and flattening of rete ridges (R). Notice intense mononuclear infiltration (I) and areas of degeneration (L) in lamina propria [H&E, X400, scale bar=25 μm]. (d) Buccal mucosa from group III showing keratin layer (arrow), apparently degree of re-epithelialization (E) and rete ridges (R). Notice subepithelial mononuclear infiltration (I) and cytoplasmic perinuclear vacuolization (▲arrow head) [H&E, X400,scale bar=25 μm]. (e) Buccal mucosa from group IV showing keratin layer (arrow), more or less normal stratified epithelium (E) and rete ridges (R) with well-organized lamina propria (L)[H&E, X400,scale bar=25 μm].

El-Mahalaway et al.Journal of Histology & Histopathology  2017 4:12DOI : 10.7243/2055-091X-4-12