So, in my occasional lurking (primarily of Noisette's threads) since leaving a while back, I've noticed this place has descended into complete f*****g lunacy.
Anyway, I wasn't going to caught up in it, but I had to sign in to say something to this because I've seen him on about it a few times now and while I'm sure it will amount to nothing; someone has to say it.
As I understand, you repeatedly claim that these methods will fail because you believe that hair follicles will be restricted in their thickness due to limited space within the skin or something like that; you seem quite convinced.
You seem quite convinced, despite that some of the most well-known hairloss research of the last 50 years readily dispels your fear and there has been no developing hairloss therapy shut down due to such a problem.
In the 1990s, Jahoda successfully used a mix of both his own cells and his wife's to grow new hair in her arm. Here is a picture that was taken at a distance.
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As you can see below her wrist watch, the hair is perfectly visible and appears about as thick as much of her bangs.
Successful dermarolling experiments as well as the famed "BBQ Man" have regrown full-thickness follicles with no issue.
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In a recent study from Iran, human dermal papilla and epithelial cells were injected into nude mice and it induced hair growth.
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There is nothing to indicate that your concerns, at least when it comes to growing human hair, are valid.
Follica works and we know that the process can be repeated; logically, it should be possible to repeat it until a sufficient amount of coverage is achieved should the first pass be insufficient.
If Tsuji succeeds in culturing the required cells (the real hurdle true "cloning" hair), there is no real reason to believe it will fail in humans because we already know it can be done.