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5B, indicated with arrows in the higher magnification inserts)
Intestinal luminal nitrogen metabolism: role of the gut microbiota and consequences for the host
GHK-Cu is a naturally occurring copper peptide famous in skin and repair research for stimulating collagen, firming and renewing skin, and supporting wound healing
The second runs through RAS, RAF, MEK, and ERK1/2, which control cell-cycle entry and satellite-cell proliferation [5]
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