Table 1.

Bacteria used in this study.

Bacteria	Sources
E. coli O157:H7	Human gastrointestinal tract
S. aureus ATCC 25923	Clinical isolate
P. aeruginosa ATCC 27853	Hospital blood specimen
* S. pseudintermedius MIC 407	Crust from skin
* S. pseudintermedius MIC 408	Papule/recurrent pyoderma
* S. pseudintermedius MIC 411	Exudate from wound
S. pseudintermedius MIC 504	Pustule
S. pseudintermedius MIC 509	Deep pyoderma

* Methicillin-resistant Staphylococcus pseudintermedius (MRSP).