These disease-fighting bacteria produce echoes detectable by ultrasound
The technique could help scientists verify if bacterial treatments for some cancers, gut illnesses are working
![bacteria illustration](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2018/01/010318_MT_bacteria_feat.jpg?fit=860%2C460&ssl=1)
TAGGING BACTERIA Microbes genetically modified to contain gas-filled protein pouches (illustrated) scatter sound waves, generating ultrasound signals that reveal the microbes’ location within the body.
Barth van Rossum for Caltech