3 ms·
Teeth mostly consist of hydroxyapatite, which doesn't contain any carbon. Not 100% sure, but for someone that just died, you might be able to do it with their
by hobofan 7y ago
Teeth mostly consist of hydroxyapatite, which doesn't contain any carbon.
Not 100% sure, but for someone that just died, you might be able to do it with their brain, as brain cells are hardly ever renewed. For a living human I don't think there is any way that's non-invasive.
- garmaine 7y agoThat thing about brain cells not regenerating is a myth, btw.
- hobofan 7y agoCould you provide a source for that? I recently tried to read up on the topic and everything I found stated that brain/nervous cells are generally barely regenerated and can stay with you your whole life. Granted, most articles trace back to this source[0] from 1967, but if newer information exists, they've done a really bad job at spreading it. [0]: https://bionumbers.hms.harvard.edu/bionumber.aspx?&id=101940 https://bionumbers.hms.harvard.edu/bionumber.aspx?&id=101940