TABLE 3.

Increased resistance of M. immunogenum strain ATCC 700505^T to Synergex Premier (100 mg/liter) at high cell density

Expt	Cell density (cells/ml)	Fraction surviving after biocide exposure for indicated timea,b
		3 h	6 h	24 h
1	1.5 × 106	0.27	0.037	<0.001
	1.3 × 105	0.17	0.022	<0.001
2	1.0 × 106	0.40	0.20	0.09
	9.0 × 104	0.14	0.02	<0.00003
3	4.5 × 106	0.38	0.23	0.013
	4.5 × 105	0.24	0.13	0.000007
	5.1 × 104	0.24	0.12	0.00008

^aCells were suspended in D/E broth for 30 min following biocide exposure.

^bCalculated as biocide-exposed CFU divided by control CFU for the same exposure duration from an average of two independent experiments.