Table 1.

Variation in gene expression for 45,101 probe sets.

Fold change range	Log2 range	No. of genes
1-2	0-1	30,392
2-4	1-2	11,965
4-8	2-3	1,980
8-16	3-4	498
16-32	4-5	132
32-64	5-6	60
64-inf	6-inf	42

Fold changes between the lowest and highest expressed mouse stains per probe sets were cal-culated and divided in seven bins. The corresponding range on log₂ scale and the amount of genes in each range are given.