I don’t remember, it was a long time ago. But I’m sure a biology major or professional biologist could answer your question

https://microbeonline.com/types-of-staining-techniques-used-in-microbiology-and-their-applications/

A single dna molecule is too small to see with the naked eye, but a few million dna molecules released from a few million microbes is easy to see IRL. In my bio lab days we did an experiment to isolate the dna molecules from a scoop of microbes, and at the end you wind up with a clump of dna molecules that together are about the size of an eraser head.

And yeah as the other person said, the term “staining” is the official term used for what you’re calling “tagging”

I mean, there’s no way to make it a worse movie.

We don’t have to imagine it, humans are often just as awful to other humans

So the spots are the nuclei and not the electron cloud? Wow! This is waaaaay smaller imaging than i was thinking it was!

Atoms are almost entirely empty space. And electrons themselves don’t really occupy a specific dot in space, they’re more of a blur that fuzzes out in a “large” region of space around the nucleus. So what’s shown here is most likely a visualization of the area that the electrons occupy.

But I’m no physicist and i didn’t read the article, so take this with a big grain of salt

EDIT

Another person here said the round things are actually the nuclei, and they sound like they know what they’re talking about. So while the informational stuff i said is right, it might not actually be a description of the image we’re looking at

Care to tell us some specific people who you think are extremists in the democratic party? And which particular policy positions you think are extreme?

Describe the situation in context. None of those phrases sound natural.

https://www.msn.com/en-gb/news/world/woman-sues-hospital-for-denying-her-treatment-for-debilitating-headaches-because-she-s-of-childbearing-age/ar-AA1hOtom