Tissue-specific gene expression analysis. Tissue-specific gene expression analysis. We initially start with 24 compressed genbank files, one for each human chromosome. We decompress (gunzip) the genbank file, extract (exonx) from it all the exons into one fasta file and then break up (dice) this fasta file into 5 smaller fasta files; we do this for each chromosome in parallel. At the same time, we decompress the file of transcripts and use formatdb to format it for use as a BLAST database. Finally, we blast the exons against the transcript database in parallel. Note that components are rendered as rectangles and the bottom half shows a unique numerical identifier; this can be used to distinguish components derived from the same template, e.g. gunzip:2 and gunzip:6.