Table 1.

The effect of G proteins on the doubling time of cells

	Doubling time, hours
Cell type	Low density	High density
Wild-type	13.0 ± 0.6	35.4 ± 4.3
aprA-	9.7 ± 0.1**	20.7 ± 0.4*
cfaD-	10.9 ± 0.4*	17.7 ± 0.1**
gα2-	13.9 ± 0.1	34.9 ± 3.3
gα5-	12.2 ± 0.5	34.6 ± 1.3
gα7-	12.2 ± 0.9	28.6 ± 5.4
gα8-	10.9 ± 0.3*	13.4 ± 0.2**
gα9-	10.1 ± 0.3**	18.3 ± 1.5**
gβ-	11.1 ± 0.4*	24.1 ± 3.0

Doubling times were calculated using the data from Figure 2. Low density doubling times were calculated for cells in the range of 2 × 10⁵ to 5 × 10⁶ cells/ml. High density doubling times were calculated for cells in the range of 5 × 10⁶ to 2 × 10⁷ cells/ml. All values are means ± SEM's from three or more independent assays. A * indicates a statistically significant difference with p < 0.05; ** indicates p < 0.01, comparing the value to the wild type value (1-way ANOVA, Dunnett's test).