Photo by Rob Carr
A robotic arm prepares to put drops of DNA-bearing solution on a slide during a demonstration of the DNA scanner at the Center for Inherited Disease Research at Johns Hopkins University, Friday, March 21, 2008, in Baltimore. The scanners, blue boxes each about twice as big as a desktop printer, will reveal what DNA "letter" appears in more than 580,000 spots in the genetic material, said lab director Kimberly Doheny.
