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Clinical observations report density increases of 20 to 30 percent after three to six months of consistent topical use

US 8598118, Harding JW, Wright JW, Benoist CC, Kawas LH, Wayman GA, "Hepatocyte growth factor mimics as therapeutic agents", issued 3 December 2013 "Facilitation of hippocampal synaptogenesis and spatial memory by C-terminal truncated Nle1-angiotensin IV analogs"

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