Table 1. LD₅₀^a of spores.

	A/J mice		C57BL/6 mice
Strain	s.c.	i.n.	s.c.	i.n.
G9241b	7	3 x 103	44 (16–100)	4 x 105 (2 x 105–9 x 105)
ΔhasACB	44c (11–116)	2 x 104c (7 x 103–5 x 104)	6 x 103c (2 x 103–2 x 104)	3 x 106c (8 x 105–2 x 107)
ΔwchA	8 (1–30)	3 x 103 (1 x 103–7 x 103)	5 x 102c (2 x 102–1 x 103)	4 x 105 (1 x 105–1 x 106)
ΔwchAΔhasACB	8 x 103c (3 x 103–3 x 104)	>107	>107	N/A

^a All LD₅₀ values calculated by probit analysis; 95% confidence interval, if provided by SPSS software, in parentheses

^b As previously published [12]

^c LD₅₀ significantly different from G9241 as determined by comparison of relative median potencies in SPSS software