![Three small white and gray electronic devices on pedestals](https://web.faa.illinois.edu/app/uploads/sites/6/2021/05/zhang-zhaofu-id-2020-400w-500x0-c-default.jpg)
X Detector for detecting bacteria, 3780 × 2126 px, September 4, 2020
![Three small white and gray electronic devices on pedestals](https://web.faa.illinois.edu/app/uploads/sites/6/2021/05/zhang-zhaofu-id-2020-400w-500x0-c-default.jpg)
X Detector for detecting bacteria, 3780 × 2126 px, September 4, 2020
X Detector for detecting bacteria, 3780 × 2126 px, September 4, 2020
X Detector for detecting bacteria, 3780 × 2126 px, September 4, 2020