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1999:
Poumarat F; Le Grand D; Solsona M; Rosengarten R; Citti C
Vsp antigens and vsp-related DNA sequences in field isolates of Mycoplasma bovis.
FEMS microbiology letters 1999;
173(
1):.
The expression of the 1E5 epitope which is common to the three characterized variable lipoproteins VspA, VspB and VspC of Mycoplasma bovis type strain PG45 and the presence of vsp gene DNA sequences were assessed in field isolates randomly collected from cattle showing clinical manifestations due to M. bovis infection. Among 250 isolates tested, only four failed to react with mAb 1E5. Southern blot analysis of these four isolates and of 20 isolates expressing the 1E5 epitope were performed using synthetic oligonucleotide probes corresponding to a sequence located in the Vsp signal peptide coding region common to all known Vsp products or to selected regions of previously characterized vsp genes, vspA, vspE and vspF. The results demonstrate the presence of multiple vsp-related DNA sequences in all M. bovis field isolates tested and indicate that the vsp repertoire varies in size and composition among isolates.
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