It was probably a contrast agent like you said, I don’t have any kind of medical background, I just know that it lit up under imaging and the med nerds thought it was interesting, lol.

How’d you set up your camera to take this photo? I’m impressed with the dedication to the bit.

My mom has some kind of acid reflux issue. To diagnose, they had her swallow some radioactive thing and x-rayed her. It was so bad the doctor called in a whole flock of med students to watch the radioactive tracer yo-yo in her esophagus.

We’re so fucked.

Rats are also great pets! And also have all of the same downsides as opossums. :(