Table 1.

Strains of F. tularensis used in the present study.

Strain Name	Subspecies	LD50 for Mice, CFU/Animal	LD50 for Guinea Pigs, CFU/Animal
15NIIEG	holarctica	82	108
503	holarctica	<5	<50
1045	holarctica	<5	<50
X-3	holarctica	<5	<50
SCHU	tularensis	<5	<50
8859	tularensis	<5	<50
ACole	tularensis	<5	<50
678	mediasiatica	<5	<50
120	mediasiatica	<5	<50
554	mediasiatica	<5	<50