LMGNSs actively recognize, target, and penetrate HeLa cell. (a) Time-lapse images of acoustically propelled LMGNSs actively seeking and targeting the HeLa cell. Scale bars, 20 μm. (b) CLSM images illustrating the internalization of the LMGNSs in the HeLa cell. Scale bars, 10 μm. (c) The 3D reconstruction CLSM image in (b). Scale bar, 10 μm.