I use mark.raw<-read.GenePix() mark.norm<-maNorm(mark.raw, n="l") and get normalized the data (cDNA chips). Am I doing it correctly? After that, how can I get expression data and output them to TXT or XLS file? Thanks Lang Chen Research Assistant Department of Biostatistics Section on Statistical Genetics Ryals Public Health Building, Suite 343A University of Alabama at Birmingham 1530 3rd Ave S Birmingham, Alabama 35294 Tel 205-9757772

Hi, > I use > mark.raw<-read.GenePix() > mark.norm<-maNorm(mark.raw, n="l") > and get normalized the data (cDNA chips). That is correct. To obtain the expression data use write.xls(maM(mark.norm), file="myfile.xls") Cheers Jean