Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visitacolkot.co.j.j.

That's y-A-K-U-L-T dot-C-O-J-P.

When it comes to a guide for your gut, count on Yacolt.

This is Scientific American's 60-second science.

I'm Christopher in Taliatta.

If you find yourself at a cookout this 4th of July, gazing at the hot dogs, wondering,

what exactly are they? Here's your answer.

They're just tubes of fat.

Tyler Rouse, pathologist at the Stratford General Hospital in Ontario, Canada.

And I may as well give a spoiler alert before continuing this story because...

I've ruined hot dogs for many people.

A couple years back, Rouse, too, was wondering about the composition of Franks.

Given his day job...

I said, well, you know, that's actually an easy answer to find out.

We work in a lab.

We make slides all day. Hot dogs are kind of the

perfect shape to make into a slide. We can actually answer this question. So he and his colleague

Jordan Radigan got their hands on three types of dogs, a no-name brand from the supermarket,

another all-beef dog, and a third from a ballpark vendor. They then took cross sections for slides and used

...