Inside the cell

"DNA typing -- the analysis of a biological sample for a person's genetic signature -- has led to the unprecedented exoneration of hundreds of wrongfully convicted people. And every day we hear stories about how police used DNA to capture a dangerous rapist or killer. Reading these accounts, it is hard not to think of DNA typing as an unmitigated good. Who can argue with a technology that helps catch bad guys and correct law enforcement mistakes? But there is a darker side to this story -- a version less likely to play out on dramatic television shows. In Inside the Cell, Erin Murphy shows…