Schematic representation (IMAGE) Ecole Polytechnique Fédérale de Lausanne Caption Schematic representation highlighting the features of flow-driven navigation. Hydrokinetic power is harnessed to propel syringe-injectable microscopic probes, ensuring autonomous navigation and obstacle avoidance. Magnetic fields provide steering to wirelessly access target daughter arteries. Credit EPFL 2020 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.