TABLE 2.

ATCC reference and laboratory strains of gram-negative bacteria used during the validation process as MβL-negative control strains^a

Organism	Strain no.	Practical amplicon Tm
P. aeruginosa	PA01	86.0
Escherichia coli	DH5α	87.0
E. coli	DH10B	86.5
E. coli	K-12	86.5
E. coli	ATCC 25922	85.5
Acinetobacter calcoaceticus	ATCC 33305	85.5
Enterobacter aerogenes	ATCC 13048	86.5
P. aeruginosa	ATCC 27853	86.0
Klebsiella pneumoniae	ATCC 700603	86.5
Neisseria meningitidis	ATCC 13090	86.0
Neisseria perflava	ATCC 14799	86.0
Neisseria lactamica	ATCC 49142	86.0
Neisseria sicca	ATCC 29193	86.0
Salmonella serovar Typhimurium	ATCC 14028	86.0

^aThe 16S rRNA gene was the target gene in each case.