Table 1.

Parameters used to evaluate the quality of the microarray hybridization signals

	Scale factor	M/3′	Present calls	Concordant calls	Reliability index
CB normoxia	0.73	3.87	47.40	84.5	0.98
CB hypoxia	0.77	3.17	49.57	85	0.99
AM normoxia	0.55	1.80	51.80	83	0.98
AM hypoxia	0.78	1.76	51.47	84.3	0.98

The M/3′ value was obtained from the m-GAPDH control probe sets. The reliability index is the Cronbach's α coefficient estimated from multiple regression analysis of the triplicate hybridization values.