Nanotubes Deliver DNA into Leaves (IMAGE) University of California - Berkeley Caption A gene (red and white) bound to a carbon nanotube can easily diffuse into plant cells, where it is expressed as if it were the cell's own gene. In this case, inserting the gene for green fluorescent protein makes the leaves glow green. The nanotube is 1 nanometer in diameter and several hundred nanometers long. Credit UC Berkeley graphic by Ella Marushchenko 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.