Wassil A. Wassilev

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The visceral peritoneum of intraabdominal organs (spleen, stomach, liver, small intestine), omentum majus and the parietal peritoneum of the anterior abdominal wall and the diaphragm were studied in adult Wistar rats by combined scanning and transmission electron microscopy (SEM, TEM). In general, the peritoneal surface consisted of a mesothelium composed(More)
An electron-microscopic study of the myotendinous portion of the diaphragm in the Wistar rat has shown that at the ends of muscle fibers, longitudinally oriented invaginations and peripheral furrows of the sarcolemma establish specialized contacts with individual sacs of the sarcoplasmic reticulum. The construction of these terminal contacts is similar to(More)
Peritoneal stomata constitute the principal pathways for the drainage of intraperitoneal contents from the peritoneal cavity to the lymphatic system and have been claimed to be exclusively restricted to the peritoneal surface of the diaphragm. This concept has been revised by the demonstration of peritoneal stomata in the omental, mesenteric, ovaric and(More)
The ultrastructure changes in the articular cartilage of rabbits, subjected to daily treatment with hydrocortisone, 10 mg/kg body weight, i.m. over a period of 6–36 days, and of mice following adrenal extirpation are investigated. The changes of the cellular organelles established in both experimental groups demonstrate the presence of an inhibitory effect(More)
The spines of 70 white mice, subjected to forelimb amputation, were investigated 3, 6 and 12 months after bipedalization. Formation was established of terminal bone plates of the vertebral bodies as well as disorganization of the epiphyseal cartilage. The appearance of cavities is observed within the hyalin cartilage plates, filled up with blood cells,(More)