Colored Wells Are Processed (IMAGE) California Institute of Technology Caption Wells turn blue if a particular nucleic acid molecule is present. A cell-phone image of the wells can then undergo ratiometric spectral processing to provide a quantification of target molecules. Credit Ismagilov Lab Usage Restrictions With image credit 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.