期刊
MOLECULAR MICROBIOLOGY
卷 47, 期 4, 页码 871-877出版社
BLACKWELL PUBLISHING LTD
DOI: 10.1046/j.1365-2958.2003.03298.x
关键词
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资金
- NIGMS NIH HHS [GM-55073] Funding Source: Medline
Here, we review briefly the sources of experimental and biological variance that affect the interpretation of high-dimensional DNA microarray experiments. We discuss methods using a regularized t-test based on a Bayesian statistical framework that allow the identification of differentially regulated genes with a higher level of confidence than a simple t-test when only a few experimental replicates are available. We also describe a computational method for calculating the global false-positive and false-negative levels inherent in a DNA microarray data set. This method provides a probability of differential expression for each gene based on experiment-wide false-positive and -negative levels driven by experimental error and biological variance.
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