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Ultrastructural Study on Japanese Isolates of Spotted Fever Group Rickettsiae
Author(s) -
Uchiyama Tsuneo,
Uchida Takahiro
Publication year - 1988
Publication title -
microbiology and immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0385-5600
DOI - 10.1111/j.1348-0421.1988.tb01479.x
Subject(s) - biology , spotted fever , cytoplasm , vero cell , ultrastructure , virology , rickettsia , electron microscope , microbiology and biotechnology , virus , anatomy , genetics , physics , optics
Japanese isolates of spotted fever group rickettsiae were observed under a transmission electron microscope. In Vero cells persistently infected with Japanese isolates, small numbers of intracytoplasmic rickettsiae were seen. On the other hand, moderate numbers of rickettsiae were found in the cytoplasm of productively infected BHK cells. The electron‐lucent, halo‐like zone was found to surround organisms in the cytoplasm of their host cells, which is a prominent characteristic of spotted fever group rickettsiae. Fine structural features of the cell wall revealed thin outer and thick inner leaflets like those observed in other spotted fever group rickettsiae.