Ten strains of were examined for their ability to produce haemagglutinins and fimbriae. Nine strains formed a mannose-sensitive (MS) haemagglutinin associated with thin (4 nm) non-channelled fimbriae. These thin fimbriae of were antigenically different from the thin fimbriae of other fimbriate strains of and and probably represent a new kind of fimbria not previously described in Enterobacteriaceae. Eight of these same nine strains also formed a non-fimbrial mannose-resistant, proteus-like (MR/P) haemagglutinin. The formation of thin fimbriae associated with MS haemagglutinin and of non-fimbrial MR/P haemagglutinin are properties not associated with other strains of and .

strain NCIB11460 was unusual among the strains examined in this series in that it alone produced mannose-resistant, -like (MR/K) haemagglutinin and type-3 fimbriae which, as judged by immunoelectronmicroscopy, were antigenically like those of type-3 fimbriate strains. The identifying characters of this exceptional strain of are discussed in detail.

All ten strains also produced thick fimbriae which by immunoelectronmiscroscopy behaved like the type-1 fimbriae of strains. However, correlation between their presence and the production of MS haemagglutinin in was not established. The findings are discussed in the light of the present difficult taxonomic status of within the tribe Klebsielleae.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error