TABLE 2.

Effects of intraperitoneal injections (100 μl) into groups of mice of distinct cellular S. typhimurium populations exposed (in repeated and independent experiments) to UV-C in seawater

Microcosm	Exposure time	Total no. of cells injected/100 μl	No. of culturable cells injected/100 μl	No. of mice (dead/injected)	Mortality rate (%)	Survival time (minimum, mean, maximum)a	No. of positive cultures (mixed spleen and liver)
M1	30 s	1,870 ± 180	250	10/10	100	3, 4, 5	10/10
M2	30 s	1,990 ± 210	335	10/10	100	4, 4.2, 5	10/10
M3	30 s	2,090 ± 12	320	10/10	100	4, 7, 14	10/10
M4	1 min	2,090 ± 220	41.7	9/10	90	4, 7.5, 12	9/10
M5	1 min	2,100 ± 180	18.7	9/10	90	3, 9.5, 25	9/10
M6	1 min	1,910 ± 28	19.4	8/10	80	4, 11.5, 22	8/10
M7	2 min	1,950 ± 177	0.0047	0/20	0	28	0/20
M8	3 min	840 ± 231	0.0293	0/10	0	28	0/10
M9	3 min	1,180 ± 110	0.0083	0/10	0	28	0/10
M10	3 min	1,690 ± 190	0.004	0/10	0	28	0/10
M11	30 min	1,200 ± 430	0	0/10	0	28	0/10
M12	30 min	518 ± 42	0.0057	0/10	0	28	0/10
M13	24 h	1,250 ± 450	0	0/10	0	28	0/10
M14	24 h	3,610 ± 700	0	0/10	0	28	0/10

^aSurvival time is shown in days.