Illustration of Microchip in the Gut (image) California Institute of Technology Share Print E-Mail Caption Illustration of an ATOMS microchip localized within the gastrointestinal tract. The chip, which works on principles similar to those used in MRI machines, is embodied with the properties of nuclear spin. Credit Ella Marushchenko for Caltech Usage Restrictions Please use credit. Share Print E-Mail 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.