Roche ($RHHBY) struck a deal to buy DNA sequencing business Genia Technologies for up to $350 million. Mountain View, CA-based Genia is developing a single-molecule semiconductor DNA sequencing platform using nanopore technology. After failing to buy Illumina ($ILMN) in 2012 and deciding to close its 454 Life Sciences sequencing unit last year, Roche has been looking for technologies to strengthen its diagnostic business. Release | More