The following two videos are web seminars hosted on the roche 454 website: Genome Characterization Using High Throughput Sequencing http://www.454.com/publications-and-resources/20080930_webinar.asp Ultra Deep Sequencing and other Genotyping Technologies to Detect Viral Drug Resistance http://www.454.com/publications-and-resources/20081119_webinar.asp | Here is a link further detailing the GS FLX System Workflow: http://www.454.com/products-solutions/how-it-works/sequencing-chemistry.asp |