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Clinical studies of GHK-Cu combined with 15% L-ascorbic acid demonstrate additive improvements in photoaging parameters, with combination formulations producing 35-45% greater wrinkle reductions than either agent alone
10.1016/j.freeradbiomed.2016.02.021 77 PrasetiaR.PurwanaS
Segmiller, F
The paraffin-embedded colon samples were sliced into 7 m sections using a microtome (RM2145, Leica Microsystems K.K, Tokyo, Japan) and then mounted on glass slides (Matsunami-glass, Osaka, Japan)
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