Table 2.

Co-expression of gene pairs with short and long intergenic distances

	Mean co-expression *
Type	Intergenic distance < 400 bp	Intergenic distance > 400 bp
Bi-directional	0.152	0.060
Uni-directional	0.062	0.100
Convergent	0.024	0.050

* Pearson Correlation; mean co-expression of random gene pairs is 0.014