Root Excavation (IMAGE) Penn State Caption Research team members are shown here excavating common bean plant roots during the greenhouse experiment. Using laser ablation tomography, they were then able to section and measure root anatomy in hundreds of samples. Credit Jonathan Lynch Lab/Penn State Usage Restrictions Non commercial use only 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.