Francesca Storici, Georgia Tech (IMAGE) Georgia Institute of Technology Caption Georgia Tech School of Biology graduate student Ying Shen (front) and assistant professor Francesca Storici set up the polymerase chain reaction machine to detect ribonucleotide-driven mutations in DNA. Credit Georgia Tech/Gary Meek Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.