Table 2. Statistical analysis of growth rates for untreated and Dex-treated GBM cells in 2D culture.

	GBM-1-Dex	GBM-1 +Dex	GBM-2-Dex	GBM-2 +Dex	GBM-3-Dex	GBM-3+Dex	GBM-4-Dex	GBM-4 +Dex
Are slopes non-zero?	P<0.0001	P<0.0001	P = 0.0256	P = 0.0070	P = 0.0027	P = 0.0044	P = 0.0045	P = 0.0077
Are slopes non-linear?	P = 0.5000	P = 0.9000	P = 0.500	P = 0.500	P = 0.500	P = 0.500	P = 0.500	P = 0.500
Are slopes different?	P = 0.1196		P = 0.9952		P = 0.853		P = 0.8083
Slope	90550	100400	584100	583050	493700	510100	687800	653500
Ratio	0.90		1.00		0.97		1.05