TABLE 2.

Accumulation of H₂O₂^a

Strain	Plasmid	Low O2		High O2
		− Glucose	+ Glucoseb	− Glucose	+ Glucoseb
SAM1	None	<0.010	<0.010	0.580	<0.010
JNOX1	None	<0.010	<0.010	1.590	<0.010
JNOX1	pNPR1	<0.010	<0.010	<0.010	<0.010
JNOX1	pLZ12	<0.010	<0.010	1.170	<0.010

^aThe amount of H₂O₂ accumulated in overnight broth cultures is expressed as a ratio of the millimolar of [H₂O₂] to the units of optical density at 600 nm. 

^bGlucose was added at a final concentration of 1% (wt/vol).