Minute Mona Lisa (IMAGE) eLife Caption This is an accurate millimetric replica of Leonardo da Vinci's Mona Lisa, formed by approximately one million <i>E. coli</i> cells that were genetically engineered to respond to light. Credit Frangipane et al., 2018 Usage Restrictions This image is free to be reused, as long as it is credited as appropriate. 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.