Extended Data Fig. 5: Acoustic shielding in BURST sequence at high ARG-expressing cell concentration.
From: Ultrasensitive ultrasound imaging of gene expression with signal unmixing

(a) Images from the high-pressure frames (frames 2–5) of a BURST+ sequence applied to a 1% agarose phantom with wells containing tissue-mimicking scatterers mixed with 108 cells/ml RFP-expressing E. coli Nissle (left) and ARG-expressing E. coli Nissle (right). Scale bars: 2 mm. (b) Mean pixel intensity vs. frame number for the ARG well, corresponding to the ROI of the same color in Frame 5 of the previous panel.