Protective Effects of Miswak (Salvadora persica) against Experimentally Induced Gastric Ulcers in Rats

Figure 3

Light micrograph of histochemical staining of periodic acid–Schiff (PAS) in rats. (a) Control rats revealed intense PAS reaction at the surface mucous epithelium in the pit region. (b) No PAS reaction at the surface mucous epithelium in the pit region and moderate PAS reaction at the mucous cells in the pit and isthmus region of EtOH-induced gastric injury. (c) Lower distribution of PAS reacting cells in the SP200-protected group than those observed in the control group concentrated mainly in the pit region. (d) Similar distribution of PAS reacting cells in the SP400-protected group to the control group concentrated in the pit region. Scale bar = 50 µm.