研究人员已经研发了一种可消化的传感器，配备了基因工程菌，可以诊断胃出血或其他胃肠道问题。

Ingestible 'bacteria on a chip' could help diagnose disease

https://www.sciencedaily.com/releases/2018/05/180524141712.htm

1. Mark Mimee, Phillip Nadeau, Alison Hayward, Sean Carim, Sarah Flanagan, Logan Jerger, Joy Collins, Shane McDonnell, Richard Swartwout, Robert J. Citorik, Vladimir Bulović, Robert Langer, Giovanni Traverso, Anantha P. Chandrakasan, Timothy K. Lu. An ingestible bacterial-electronic system to monitor gastrointestinal health. Science, 2018; 360 (6391): 915 DOI: 10.1126/science.aas9315