This argument is plausible it reflects a well-documented problem in drug development where unpatentable compounds struggle to attract industry funding regardless of their scientific merit but it should be noted that this explanation, while widely discussed, has not been formally established in the published literature as the primary reason for the evidence gap
Characterization of a recombinant soluble form of human placental leucine aminopeptidase/oxytocinase expressed in Chinese hamster ovary cells
Applying topical GHK-Cu serum immediately after a microneedling session takes advantage of the increased skin permeability created by the tiny channels
M., Kynaston, L., Naseem, S., Proudman, E., & Laceby, D
doi: 10.3390/antiox9080743 126 SinghK.ConnorsS
[DOI] [PMC free article] [PubMed] [Google Scholar] 109.Klein E.A., Thompson I.M., Jr., Tangen C.M., Crowley J.J., Lucia M.S., Goodman P.J., et al