Properties of signal intensities observed with individual probes of GeneChip Rat Gene 1.0 ST Array, an affymetric microarray system.
For proper evaluation of the results of microarray experiments, it is important to understand how the signal intensities of individual probes are determined. Our previous studies revealed that signal intensities of individual probes in the Agilent array system (code G4131F) are largely dependent upon the location of the probes in the mRNA. In the present study, we examined the properties of signal intensities of individual probes in an Affymetrix array system (GeneChip Rat Gene 1.0 ST Array), in which a random primer fused to the T7 promoter sequence is employed. Distinct from the Agilent array system, individual probes used in this Affymetrix array system did not show the probe-location effects, but gave relatively diverse signal intensities. However, the diversities of the signal intensities of these individual probes were not due to experimental error.
Institute for Genome Research, University of Tokushima, Kuramotocho-3, Tokushima, 770-8503, Japan.
Eriko
E
Obana
Takuya
T
Hada
Takenori
T
Yamamoto
Rei
R
Kakuhata
Takuya
T
Saze
Hirokazu
H
Miyoshi
Tomoshige
T
Hori
Yasuo
Y
Shinohara
D000818:Animals; D020869:Gene Expression Profiling / Q000379:methods*; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*; D015345:Oligonucleotide Probes / Q000235:genetics; D017902:Podoviridae / Q000235:genetics; D011401:Promoter Regions, Genetic; D051381:Rats
D015345:Oligonucleotide Probes