Plus d'aide RNA-seq; normalize read count
RPKM=(number of mapping reads)*1000bp*1 million reads/[(length of transcript)*(number of total reads )]
http://www.clcbio.com/manual/genomics/Definition_RPKM.html
http://seqanswers.com/forums/showthread.php?t=10657
http://genomics.isi.edu/rnaseq/framework
http://www.nature.com/nmeth/journal/v5/n7/pdf/nmeth.1226.pdf