The light-microscopical and electronmicroscopical observation on vaginal mucosa of rabbits treated with a 10% peach leaves extract was made. The results showed that the spuamous epithelium of vaginal mucosa was clearly observed in every layer by light microscope and that the cellular fine structure of every layer did not find any changes both in the experimental and the control group by electron microscope. Therefore, this suggests that this agent has no abnormal stimulating effect on vaginal mucosa of rabbits. It is safe for the treatment of trichomonas vaginalis with the peach leaves extract.

Twelve patients with latent Keshan disease in Xunyi County,Shaanxi Province were electron-microscopically observed with endomyocardial biopsy. Seven of them were males, 5 females; their ages ranged from 14 to 40 years old. They had suffered from the disease for 4 to 5 years in an average. The samples taken from their heart ventricles were prepared in routine,some were prepared with the modified lanthanum preparation according to Hoffstein's method to study the membrane permeability of the patients' myocardium at the same time,In almost all the samples, most of sarcoplasmic reticula,transverse tubule system and intercalated disc spaces are dilated. In some samples prepared with the lanthanum preparation, the electronic density particles are found in the intercalated disc spaces and scarcely in the cytoplasm of myocardium. Mitochondria often show changes both of proliferation and of degeneration simutaneously. Sometimes, minimal myolytic changes of filaments also can be seen, but there are no any necrotic or myolytic foci of myocardium found in the samples at all. Some nuclei are enlarged and twised,in them some pseudoinclusions also can be occasionally seen. Myofibrils vary their thickness. At the same time, they also have some abnormal branches. More than normal amount of fat droplets and glycogen granules deposite in the myocardial cells. Besides,there are lots of lipofusicin granules accumulated around the nuclei in the cytoplasm.