Fig. 2
From: Melatonin antagonizes lipopolysaccharide-induced pulpal fibroblast responses
Histological staining against human melatonin expressed in pulpal tissues. 2A, 2C, and 2E illustrate hematoxylin and eosin staining (H&E) of normal pulp at 200X magnification level. A strong staining signal was observed in odontoblastic layers and pulpal connective tissues (arrows; 2B). Localization of melatonin with collagen-like substances (arrows; 2D) and endothelial cells (arrows; 2F) was evident in normal pulp