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J Diabetes Complications (2021) 35(12):108050

and ergothioneine has alternately been suggested as a vitamin (Reference Paul and Snyder5) , longevity vitamin (Reference Ames8) and nutraceutical (Reference Borodina, Kenny and McCarthy6)

Theoretically yes

Koeppen, H

Mesenchymal stem cells are adult stem cells, found predominantly in adipose (fat), cartilage, and bone tissue, that have an important role in connective tissue repair and regeneration due to their ability to differentiate into multiple types of cells, depending on the signals they receive
