expr.data: Expression data example
Description
Expression data taken from Pollack et al. PNAS. 2002, 99(20): 12963-8.
Format
A data frame with 99 observations on 45 variables. The first 4 columns are the unique identifier, symbol
for the chromosome and start position of the probe the next 41 columns are the expression log-ratios of 41 samples.Details
A subset of the original data is taken namely all the probes on the long arm of chromosome 8.
References
Pollack JR, Sorlie T, Perou CM, Rees CA, Jeffrey SS, Lonning PE, Tibshirani R, Botstein D, Borresen-Dale AL, Brown PO (2002).
Microarray analysis reveals a major direct role of DNA copy number alteration in the transcriptional program of human breast tumors.
Proc Natl Acad Sci USA. 1, 99(20), 12963-8.