TABLE 4.

Relative bacteriophage reactivation and plating efficiency factors on stationary-phase P. aeruginosa PAO1 and a uvrA knockout derivative of P. aeruginosa PAO1

Phage	Reactivation factor for UV-C-irradiated phage under the following incubation conditionsa:		Plating factor for unirradiated phagea
	Dark	Photoreactivating
D3C3	7.5 × 10−6	2.3 × 10−3	0.46
F116	NDb	ND	ND
G101	1.2 × 10−4	2 × 10−3	1.07
UNL-1	1.3 × 10−5	3.1 × 10−2	0.97

^aThe factors were each calculated by comparing the plating (plaque-forming) efficiency of a phage sample on stationary-phase uvrA knockout host cells to the plating (plaque-forming) efficiency of stationary-phase P. aeruginosa PAO1 host cells. The values are means based on two experiments. 

^bND, not determined.