By Maggie Bartlett, National Human Genome Research Institute - http://www.genome.gov/dmd/img.cfm?node=Photos/Technology/Research%20laboratory&id=79299, Public Domain, Link
By Maggie Bartlett, National Human Genome Research Institute - http://www.genome.gov/dmd/img.cfm?node=Photos/Technology/Research%20laboratory&id=79299, Public Domain, Link