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January 2016 in “Cells tissues organs” Norepinephrine helps skin cells grow, which is important for hair growth.
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August 2003 in “Anais Brasileiros de Dermatologia” Neuropeptides affect skin inflammation, repair, and hair growth, with potential for therapy.
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September 2025 in “Physiologia” Ovalbumin–aluminum sensitization causes increased pain sensitivity and nerve changes in mice.
Transplanted rat hair follicles grew hair and had increased but not fully restored nerve connections in mice.