T2-weighted cross-sectional MR imaging of MSP swarms inside SD rats.

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T2-weighted cross-sectional MR imaging of MSP swarms inside SD rats. T2-weighted cross-sectional MR imaging of MSP swarms inside SD rats. (A) MSP swarm of two different concentrations inside the subcutaneous tissues. (B) MSP swarm of two different concentrations inside the stomachs. (C) MSP swarm with the same concentration but subject to actuation and steering (with a rotating magnetic field) of different time periods before MR imaging across the rat’s stomach. Xiaohui Yan et al. Sci. Robotics 2017;2:eaaq1155 Copyright © 2017 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works