Abstract:
:Opaque (Op) and translucent (Tr) colonial variants were isolated from Vibrio vulnificus strains. Op-type variants were more resistant than the isogenic Tr-type variants, but the survival rate of the Op-type variants varied with the strains. Antisera were prepared by immunizing rabbit with whole cells of Op and Tr variants of some strains, in which the difference of the sensitivity between Op and Tr cells was remarkable. Then agglutination tests with their living and heat-killed cells were carried out. The results suggested the presence of capsular antigen in Op cells and its absence in Tr cells, with the exception of the existence of a slight amount of capsular material in Tr variants of strain L-180. The thin capsular layer of Tr cells of strain L-180 was also demonstrated electron microscopically, but the layer was thinner than that of the isogenic Op cells. Results of determination of sugar content in the extracted capsular fraction also showed that Op to Tr transformation was due to loss of capsular antigen of the cells. These results confirmed the morphological studies previously reported which suggested the prevention of host defense system by the capsular material of the vibrio.
journal_name
Microbiol Immunoljournal_title
Microbiology and immunologyauthors
Shinoda S,Kobayashi M,Yamada H,Yoshida S,Ogawa M,Mizuguchi Ydoi
10.1111/j.1348-0421.1987.tb03102.xsubject
Has Abstractpub_date
1987-01-01 00:00:00pages
393-401issue
5eissn
0385-5600issn
1348-0421journal_volume
31pub_type
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