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“The method has been used for everything from measuring the age of ringless trees in the Amazon to examining whether humans generate new olfactory bulb neurons into adulthood”

…do we?



Qualified 'Yes'.

We do but the extent is limited compared to other mammals, brain mass normalised.

There's a historical overview here: https://www.ncbi.nlm.nih.gov/books/NBK55966/

I'd have to dig around for comparative mammal brain regen rates.




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