TABLE 4.

Survival rates of Campylobacter jejuni cells within Acanthamoeba polyphaga.

	Starting suspension (log CFU/ml)		Gentamicin treatment
			C. jejuni + A. polyphaga (log CFU/ml)			C. jejuni (log CFU/ml)
Isolate	Average	SD	Average	SD	Survival rate (%)
Cj5653P	7.71	0.004	3.28	0.051	34.73	No growth
Cj5654P	7.75	0.005	2.86	0.066	42.59
Cj5716W	7.75	0.009	2.93	0.076	36.84
Cj5623W	7.74	0.027	3.05	0.126	37.84
Cj5718C	7.76	0.013	3.08	0.119	39.40

Intracellular survival rates were determined by colony-forming units (CFU) counted at 0 and 2 h post gentamicin treatment at 30°C under aerobic conditions (AC).