Ultrastructural observations on the peritoneum in the mouse.
AUTOR(ES)
Ettarh, R R
RESUMO
The serous mesothelium of the serosa and mesentery of the small intestine in the mouse were examined by scanning and transmission electron microscopy. The serosa consisted of a single layer of flattened microvilli-bearing cells containing nuclei, caveolae and micropinocytotic vesicles. The observations in this study differed from previous reports on mesothelial surfaces in two respects. A surface layer of amorphous material was present over parts of the serosa. This layer probably represents serous fluid trapped by the mesothelial microvilli but is unaffected by prefixation rinsing in saline or ultrasonic cleaning. The layer is lost following osmication and routine processing for transmission electron microscopy. The possibility that a serous fluid layer may be preserved in this way may be useful in assessing changes in the peritoneum. Stomata were observed in the mesentery but there was no evidence of a connection with the lymphatic system. The presence of mesenteric stomata may explain the difference in permeability reported between parietal peritoneum and mesentery.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1167649Documentos Relacionados
- In vivo observations on mature myelinated nerve fibres of the mouse.
- Ultrastructural analysis of hepatic haematopoiesis in the foetal mouse.
- Ultrastructural observations on the caecum of the rabbit.
- The effects of colcemid on hematopoiesis in the mouse.
- Ultrastructural and biochemical observations on the tympanic membrane.