SUMMARY: Two mouse virulent strains of and their avirulent variants were tested for their resistance to the bactericidal power of fresh human blood and for toxin production.

The variants were much more easily killed by fresh blood than the parent strains and had lost the ability to produce α-haemolysin, dermonecrotic toxin and leucocidin.

The Panton-Valentine leucocidin test was supplemented by two others that gave more reliable results, one depending on direct observation of leucocytes emigrated from a clot on to the surface of a slide, the other on the destruction of bactericidal power of the leucocytes.


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