1. The most striking change in the tubules is hydropic degeneration of the epithelium.

2. However, these must be distinguished from simple "hydropic degeneration" seen in placentas of fetuses undergoing intrauterine demise.

3. The avascular villi of molar pregnancy are quite large. However, these must be distinguished from simple "hydropic degeneration" seen in placentas of fetuses undergoing intrauterine demise.

4. Under light microscope, there were hydropic degeneration in epithelial cells of proximal tubule in right renal cortex and a little protein and cellular casts in medulla.

5. Hydropic degeneration and focal necrosis can be found by microscope in the dosage groups.

6. Structural disorder of hepatic lobules, mild congestion in hepatic sinusoid and central vein, hydropic degeneration of endothelial cell and hepatocyte occurred in group B.

7. The histological structure was observated under the optical microscope. Results In experiment group, the cytoplasm of proximal convoluted tubule showed hydropic degeneration.

8. The results showed thathyperlipoidemia induced not only atherosclerosis but also pneumonia, fatty and hydropic degenerations of liver cells, and response ofmonounclear macrophage system.

9. Conclusion After a feeding of 1% sodium metabisulfite solution, testis tissue showed hydropic degeneration, that is, toxic effect on mice reproduction can be caused by overdose sodium metabisulfite.