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Products sold through online vendors as "research use only" are not regulated by the FDA
doi: 10.1042/CS20120226

The mean age was 67 (SD12), 38.4% were female, and the median NIHSS was 3 (IQR14)

Topical creams only do so much because they can't reach the deeper layers where collagen is produced
PubMed Sigalos JT, et al
