Skip to main content
. Author manuscript; available in PMC: 2012 Oct 1.
Published in final edited form as: Res Nurs Health. 2011 Aug 2;34(5):408–418. doi: 10.1002/nur.20448

Table 1.

Comparison of Two Affymetrix Arrays

Variables Human GeneChip® Human GeneChip®
ST 1.0 U133 Plus 2.0
Number of probes 764,885 >54,000
Probe design 26 probes per gene on average with at least 1 probe per exon 11 probes are designed to the first 600–800bp of a gene
Number of transcripts 19,734 >47,000
Genes well annotated >28,869 >38,500
Alternative splicing some data available not available
Hybridization cocktail volume 80 μl 200 μl
Sample required 25 ng/μl 50 ng/μl
Cost lower higher

Note. Annotations provided are the most current brochure information. Frequently updated annotation files are available to users on the Affymetrix website. ST denotes sense target.