Confocal Micrograph (IMAGE) University of Oxford Caption This is a confocal micrograph of an artificial tissue containing 2 populations human embryonic kidney cells (HEK-293T) printed in the form of an arborized structure within a cube Credit Sam Olof / Alexander Graham 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.