5 ms·
Okay... so I'm going to do some nitpicking on the non-essential fringes of the argument if that's okay? > Your body has replaced all of its cells several times
by nosianu 1y ago
Okay... so I'm going to do some nitpicking on the non-essential fringes of the argument if that's okay?
> Your body has replaced all of its cells several times already in your lifetime
Not true. Cells like neurons, heart cells, skeletal muscle cells are permanent (with minor caveats).
https://en.wikipedia.org/wiki/Permanent_cell https://en.wikipedia.org/wiki/Permanent_cell
- lukan 1y agoThank you! I always doubted that claim, but never looked into it.
- b112 1y agoYou can take a flatworm, cut it in half, subject it to an electric field so it grows two heads. Later, without the external field, you can cut it in half and both halfs will grow a second head. It's not genetic expression, but the electric field of the flatworm that has changed permanently and is directing cell growth. So if your entire body has its own field, that retains its uniqueness, and can even cause cell specialization what then? https://www.newscientist.com/article/2132148-bioelectric-tweak-makes-flatworms-grow-a-head-instead-of-a-tail/ https://www.newscientist.com/article/2132148-bioelectric-twe... “A totally normal-looking worm with a normal gene expression and stem cell distribution can in fact be harbouring a [body plan] that’s quite different,” says Levin. “That information is stored in a bioelectric pattern – it’s not in the distribution of tissues or stem cells, it’s electrical.”
- lukan 1y agoThat is worth a submission and a HN thread for itself I think, thank you.
- adastra22 1y agoBut at the same time, all the atoms of the cells in your body (except for bones) have been entirely recycled.
- thrawa8387336 1y agoYeah but the proteins within it? Lipids, phospholipids? Water, ions?