Figure 4 : A photomicrograph of buccal mucosa of antiproliferating cell nuclear antigen (PCNA).

(a) Buccal mucosa from group I showing many brown PCNA positive nuclei among basal cell layers of the buccal epithelium (arrow) [Immunostaining for PCNA X400, scale bar=25 μm]. (b) Buccal mucosa from group II showing few brown PCNA positive nuclei among basal cell layers of the buccal epithelium (arrow) [Immunostaining for PCNA X400, scale bar=25 μm]. (c) Buccal mucosa from group III showing moderate brown PCNA positive nuclei among basal cell layers of the buccal epithelium (arrow) [Immunostaining for PCNA X400,scale bar=25 μm]. (d) Buccal mucosa of group IV showing many brown PCNA positive nuclei among basal cell layers of the buccal epithelium (arrow) [Immunostaining for PCNA X400,scale bar=25 μm].

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