BBC medical correspondent Fergus Walsh talks through how you sequence a human genome
A revolution in genome screening has been promised by a biotech company in the US.
Complete Genomics, says it will sequence one thousand complete genomes between June 2009 and the end of the year and one million over five years.
I visited the company, based in Silicon Valley near San Francisco, and saw, first hand, the potential significance of mass gene mapping.
Silicon Valley in California is a key centre for genetics, bio-tech research and computer technology - all of which are key for genome mapping.
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