An example of a gene ( FMO3 ) with tissue-specific isoforms with expression patterns described by low r and high ρ correlation coefficients (set 3). a. The mapping of the probesets 40665_at and 206496_at to the genomic location of FMO3 gene according to PLANdbAffy custom track in UCSC Genome Browser. b. Expression profile of the FMO3 gene in tissue panel of the GSE1133 dataset.