Jump on youtube and look up Dr. Jack Kruse interviews. I can't remember which one I heard it in because I've probably listened to 15-20 in the last few months. Did you have a particular question? Are you more concerned about the regrowth or the sun light hypothesis?
https://saidit.net/s/debatealtright/comments/eomq/sunlight_is_more_important_than_we_thought_jews/
I will look for the segment where Jack talked about a human limb growth researcher in the military and if I find it I'll send it.
I think Jack was talking about this 1/4 billion dollar investment 20 years ago:
https://www.bu.edu/sjmag/scimag2008/Story%20pages/DARPA.html#:~:text=In%20August%2C%20the%20military%20launched,animals%20to%20regenerate%20lost%20tissue.
It was one particular researcher on that team that discovered the light connection to bone growth.