title: AffyRNADegradation: control and correction of RNA quality effects in GeneChip expression data.
abstract: BACKGROUND
  Gene expression experiments aim to accurately quantify thousands of transcripts in parallel. Factors posterior to RNA extraction can, however, impair their accurate representation. RNA degradation and differences in the efficiency of amplification affect raw intensity measurements using Affymetrix expression arrays. The positional intensity decay of specifically hybridized probes along the transcript they intend to interrogate is used to estimate the RNA quality in a sample and to correct probe intensities for the degradation bias. This functionality, for which no previous software solution is available, is implemented in the R/Bioconductor package AffyRNADegradation presented here.
  
  
  BACKGROUND
  The package is available via Bioconductor at the URL http://bioconductor.org/packages/release/bioc/html/AffyRNA Degradation.html
authors.affiliation: Interdisciplinary Center for Bioinformatics, Universität Leipzig, D-4107 Leipzig, Haertelstr. 16-18, Germany.
authors.forename: Mario
authors.initials: M
authors.lastname: Fasold
authors.forename: Hans
authors.initials: H
authors.lastname: Binder
mesh_terms: D020869:Gene Expression Profiling / Q000592:standards*; D006801:Humans; D020411:Oligonucleotide Array Sequence Analysis / Q000592:standards*; D020871:RNA Stability; D012333:RNA, Messenger / Q000378:metabolism / Q000592:standards*; D012984:Software
chemical_list: D012333:RNA, Messenger