Table 1.

Quantitation of pyocyanin in P. aeruginosa PAO1 and the knockout mutants.

Strain	Pyocyanin production without or with complementary plasmids
	No plasmid	pUCP-T	pUCP-U
PAO1	119	76	87
PAO1ΔT	123	158	158
PAO1ΔU	157	122	126
PAO1ΔTΔU	ND	78	49

ND: not detectable.