Allele signal summaries and genotypes were generated from CEL files with the command-line program apt-probeset-genotype (v. 1.6.0; the Affymetrix Power Tool [APT] package is available at [ 15]).
Choe et al. [ 19] compared various combinations of the six steps in the differential expression analysis: background subtraction, probe-level normalization, PM adjustment (correction for the non-specific signal), expression summary (derivation of the representative gene expression from the multiple probe signals), probe set-level normalization and statistical evaluation.
It also suggests that the genetic networks to accomplish these crucial neuro-developmental processes were recruited in the craniate ancestors of lampreys and gnathostomes, because non-craniate chordates such as amphioxus or ascidians do not possess equivalent signaling centers in their anterior-most neural tube ([12] and see also below, section on "signaling", and summary figure).
For each CNV and each individual a summary signal (e.g median) is calculated when more than one marker is present at the locus of interest.
The following procedure is applied to the summary signal: Naïve CN Class Detection: A Gaussian mixture model with number of components (n.comp) = 1, 2, 3, 4, 5 and 6 is fitted to the data.
Soybean ethylene signal transduction protein summary; Table S7.
In summary, signal transduction by resveratrol was enhanced by ICI, and the action on MAPK activation by E2 alone was inhibited by ICI.
Indeed, if one is unwilling to assume even a positive correlation between BOLD signal and whatever summary measure of MEG/EEG is being localized, one might prefer to use F-statistics, which capture both increases and decreases in BOLD responses.
The former approach deals with the fluorescence signals of each individual probe and includes background correction, adjustment for the nonspecific signal and expression summary that yields an approximation of RNA abundance or "gene expression," the latter takes the gene expression as an elementary variable [ 11].
We applied an integrative functional ad-hoc analysis method to gene-level summary signals (median core probe sets or PLIER signal estimates [10], [20]).
