TABLE 1.

Effect of temperature on the growth characteristics of P. gingivalis W50

Growth temp (°C)	Mean (± SD) dry wt (mg ml−1[n = 6])a	Mean (± SD) viable counts (CFU ml−1[n = 6])
37	2.8 ± 0.4	1.5 × 109 ± 0.6 × 109
39	2.2 ± 0.5*	1.4 × 109 ± 0.4 × 109
41	1.8 ± 0.4**	1.3 × 109 ± 0.5 × 109

^a*, P < 0.05 for results at 37°C versus results at 39°C; **, P = 0.001 for results at 37°C versus results at 41°C.