首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Freeze-fracture studies of Cryptosporidium muris.
Authors:H Yoshikawa  M Iseki
Institution:Department of Biology, Faculty of Science, Nara Women's University, Japan.
Abstract:The attachment site of Cryptosporidium muris to host cells was investigated using the freeze-fracture method. Cryptosporidium muris was enveloped by a double membrane of host plasma membrane origin, which formed the parasitophorous vacuole. The outer membrane of the double membrane was continuous with the host plasma membrane at the dense band, while the inner membrane was connected with the anterior part of the parasite plasma membrane at the annular ring. The density of intramembranous particles (IMP) was dramatically altered at the above two junctures. The outer parasitophorous membrane showed low IMP-density as compared to the host plasma membrane, although both membranes were continuous. The inner parasitophorous membrane had few IMP, whereas the parasite plasma membrane showed numerous IMP. When the attachment sites of parasites and host cells were fractured, circular-shaped fractured faces were observed on both sites of the parasite and host cell. These exposed faces corresponded to the dense bands and were very similar in size in each parasite.
Keywords:
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号