Fig. 3From: Will Nigella sativa oil protect parotid glands of rats against cranium gamma irradiation? Histological and immunohistochemical evaluationPhotomicrographs of TGF-β expression in the parotid glands (A) The control group showed almost negative expression, (B) the NSO group exhibited almost negative expression, (C) the radiation group demonstrated strong expression, and (D) the NSO + radiation group revealed moderate expression. (E) Chart representing the area percentage of TGF-β expression in different experimental groupsBack to article page