TABLE 1.

Genotypic and phenotypic characteristics of S. intermedius isolates from dogs and pigeons

Source of isolate	ITS-PCR type	No. of isolates	No. of isolates positive for:		Leukotoxicity titera
			lukS	lukF	Range	Meanb
Dogs	A	14	14	14	256-512	441
	B	16	16	16	256-1024	450
	C	4	4	4	512	512
	D	6	6	6	256-1024	512
	E	2	2	2	512-1024	724
	F	1	1	1	512	512
	G	1	1	1	256	256
Total		44	44	44	256-1024	466
Pigeons	H	5	5c	0	<2	<2
	I	11	11c	0	8-32	12.4
	J	1	1c	0	<2	<2
	K	5	5c	0	<2	<2
	L	40	40c	0	<2-8	<3
Total		62	62	0	<2-32	<3.6

^aLeukotoxicity titer is the inverse of the last dilution that induced the flattening of cells in 95% of leukocytes.

^bCalculated after logarithmic transformation.

^cWeak reaction as depicted in Fig. 1.