Table 1.

Variation coefficients of gene expression levels estimated from different data sets.

Dataset	Av ξu	min ξu	${\sigma }_{{\xi }_u}$	# genes
TELL	0.235	0.188	0.025	7084
HYPERDIP	0.269	0.211	0.029	7084
BCC	0.303	0.175	0.090	10212
PCNORM	0.318	0.213	0.11	7084
PCTUM	0.280	0.152	0.12	7084