So how do the cells get out of the uterus, or the uterine-like cells get to other places in the body?

So every month when someone has a period, so you get shedding of the lining of the womb, and most of that comes out through the vagina, and then onto whatever period products you're using, and then dispose of.

But some of it will actually go up through the fallopian tubes and go into the pelvis, and that's a really common thing.

That happens to about 90% of people, and we call it retrograde menstruation.

And in most people, these, you know, part of the period blood and all the cells that come with it, that'll just be seen by your immune system and cleared away and disappear away.

So, but we think in about 10% of people, that doesn't get cleared away.

And so there's cells that are very like the lining of the womb, and essentially were the lining of the womb, so they stick onto the side of the pelvis.

Mm.