A simple microarray experiment (2004-09-21)

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Someone just gave me some data with a small microarray. There are four exposed animals (Exp.1 through Exp.4) and four control animals (Exp.5 through Exp.8). The microarray has 96 genes, as well as some housekeeping genes

    Position   UniGene  Genebank Symbol

97        97       N/A   L08752   PUC18

98       100     Blank     Blank  Blank

99       103   Mm.5289    M32599   Gapd

100      105   Mm.5246 NM_008907   Ppia

101      109  Mm.13020 NM_009438 Rpl13a

102      111 Mm.195066    M12481   Actb     

To read this data into R, I first created a comma separated value file from Excel. Then I used the read.csv() command in R to create a data frame. When I have time, I will try to document all the steps in the data analysis of this small microarray.

This page was written by Steve Simon while working at Children's Mercy Hospital. Although I do not hold the copyright for this material, I am reproducing it here as a service, as it is no longer available on the Children's Mercy Hospital website. Need more information? I have a page with general help resources. You can also browse for pages similar to this one at Category: Data mining.