Figure 1 : H&E stained sections.

(A): Control group showing rounded serous acini (S) with narrow luminae. They have basal basophilic nuclei (curved arrow) and apical acidophilia (arrowhead). Note, normal appearance of intralobular ducts (D) and thin septa (CT).
(B): Operated group showing irregular acini (S) with darkly stained nuclei (curved arrow) and cytoplasmic vacuolations (V). Cellular infiltration (f) inside thick connective tissue (CT) septa is also seen. Notice, homogenous acidophilic material (M).
(C): Showing dilated interlobular ducts (D) with stratified epithelial lining (E); prominent thick septa (CT) are also seen. Congestion of blood vessels (BV) is also seen.
(D): Treated group showing apparently normal serous acini (S) and intralobular ducts (D) of parotid gland. (Scale bar=20μm).

Elnegris et al.Journal of Histology & Histopathology  2015 2:23DOI : 10.7243/2055-091X-2-23