Experimental study on mechanism and protection of stress ulcer produced by explosive noise

Figure 1 Gross specimens in stimulating group congestion, edema, erosion and ulcer formation.

Figure 2 Stimulating group: interruptions of mucosa, enlarged glandular gaps, damaged parts and a large amount of RBCs accumulated among glands. HE × 10

Figure 3 Stimulating group exhibited irregular cell structure, with nuclei withered, gaps among nuclei broadened, endoplasmic reticulum expanded, mitochondrion hypertrophic, granuals increased. EM × 7500

Figure 4 Prevention group: slight withered nuclei, a little broadened nuclear gasps and more or less expanded endoplasmic reticulum. EM × 6000