Table 1.

Clusters used in the multi-cluster analysis.

Name	Size	Tissue	Reference
Iron metabolism:
Down	37	Intestine	Bedrine-Ferran et al., Genomics (2004) [25]
Up	28
Glioblastomas:
glioGBM	15	Glia	Tso et al., Cancer Res. (2006) [50]
glioPRIM	58
glioSEC	21
Circadian Rhythms:
circ	56	Heart & liver	Storch et al., Nature (2002) [54]
Human fetal lung:
lung	17	Lung	Wade et al., Am. J. Respir. Cell Mol. Biol. (2006) [55]
Human retinal pigment epithelium:
arpe19	9	Retina	Cai and Del Priore, Mol. Vision (2006) [56]
rpe	35
Alzeimers disease:
alzheimer	167	Hippocampus	Blalock et al.,Proc. Natl. Acad. Sci. (2004) [57]
Acute lymphoblastic leukemias:
bcr-abl	35	Bone marrow	Yeoh et al., Cancer Cell (2002) [58]
hyperdiploid	38
novel	37
tel-aml1	34