Introduction Retinoic acid (RA) is the most prevalent and metabolically active vitamin A derivative in the human body that regulates a wide range of biological processes including cell proliferation ...

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Retinoids and retinoid analogues exert their activities by interacting with nuclear receptors (RARs [retinoic acid receptors] or RXRs [retinoic X receptors]) on cells and by activating genes that ...

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The aim of this study was to investigate whether exogenous retinoic acid (RA) can upregulate the mRNA and protein expression of growth-associated protein 43 (GAP-43), thereby promoting brain ...

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And in smaller sites further from the body, like hands, there is less retinoic acid and more CYP26B1. “Regenerating limbs retain their proximodistal (PD) positional identity following amputation.