Table 1.

Percentage of probe usage after re-annotation

Organism	GeneChip	Affymetrix	Brainarray [1]	AffyProbe-Miner * [3]	Hybrid
H. sapiens**	HG-U133_Plus_2	604,258	40%	56%	94%
M. musculus	Mouse430_2	496,468	49%	56%	94%
R. norvegicus	Rat230_2	342,410	40%	29%	94%
B. taurus	Bovine	265,627	44%	29%	93%
D. rerio	Zebrafish	249,752	39%	46%	88%

* Gene Consistent RefSeq plus GenBank, min. probe-set size = 5.

** GeneAnnot [2]: 58% probe usage.