Retinoic Acid Receptors (RARs) are a group of proteins that play a crucial role in the body's response to retinoic acid, a metabolite of vitamin A. These receptors are found in various tissues and are involved in regulating gene expression, influencing processes such as cell growth, differentiation, and development. RARs function by binding to retinoic acid, which then allows them to interact with specific regions of DNA. This interaction can either activate or repress the transcription of target genes, making RARs essential for normal physiological functions, including embryonic development and maintaining healthy skin.