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. 2001 Feb;69(2):977–987. doi: 10.1128/IAI.69.2.977-987.2001

TABLE 1.

Salt resistance of wild-type and mutant L. pneumophila strains

Strain Mean % NaCl-resistant CFUa ± SD
Wild type 0.01 ± 0.003
Salt-resistant 110.0b ± 14
STM-1 0.06 ± 0.01
STM-2 0.005 ± 0.002
STM-3 0.002 ± 0.0006
STM-4 0.8b ± 0.1
STM-5 0.05 ± 0.03
STM-6 74.0b ± 17
a

Percent NaCl-resistant CFU was determined for strains grown to post-exponential phase with the following formula: (CFU on BCYEα-MOPS plus 125 mM NaCl/CFU on BCYEα-MOPS) ×100. 

b

Statistically different from wild type (P < 0.05).