person_123, we don't REALLY know that the side and back hairs are affected by DHT. I mean, don't get me wrong, I think that is the case as well, but maybe it is something else, maybe they thin out for a different reason.
That's what I like about the design of the Phase II trials. I think it will answer a few of these questions.
I mean, for one, it is really interesting that 2 out of those 7 in the Phase I trials did not regrow hair. Let's assume that they did not regrow any hair, which I'm not sure is explicitly stated, but let's assume that. And the possible reason that was given in the interview was that maybe the donor or original hair follicle cells were "out of the growth cycle" when injected in the recipient area. But did they take just one hair follicle and multiply/cultivate that one group of dermal papilla cells, or did they take cells from multiple neighboring follicles, and multiply them all, and then inject the resulting cells into the 1 cm^2 area? What I am getting at is, sure every follicle grows and sheds in cycles, but the follicles that are in the shedding phase on a non-balding person are always surrounded by other follicles, greater in number, that are NOT in a shedding phase, which is why you don't see people "shedding in patches", so to speak. Instead, they shed a few hundred hairs a week, but the shedding hairs are spread out. So if they took a strip of skin with neighboring follicles during the Phase I trials, which is what I think they did, just like they do in today's hair transplant prodecure, and multiplied the entire group of cells, and injected the resulting multiplied cells, you would think that those 2 guys would at least grow back 90% or so of the area, NOT 0%.
I hope I am making sense. =[
So I think that since they grew no hair at all, there is something really wierd going on. Some sort of, I don't know, coordination among neighboring follicles, that decides in the end whether hair will grow, or not. I don't know. I'm just thinking out loud. But hopefully with the design of hte Phase II trials, which will be testing the injected multiplied cells in both an area with no hair at all, and in thinning areas, we will get some answers, even if it is explicitly stated in the interview that the true reason behind HM working or not working is not what they are looking for. They just want to test it to see if it works on a larger scale, and with what process or protocol or specific ingredients.
Baby steps. It is so true. We humans love to take huge leaps, when we should just take one step at a time.