RARβ, or Retinoic Acid Receptor Beta, is a type of protein that belongs to the nuclear receptor family. It plays a crucial role in regulating gene expression in response to retinoic acid, a derivative of vitamin A. RARβ is involved in various biological processes, including cell differentiation, growth, and development. This receptor is particularly important in the context of embryonic development and neurogenesis. Abnormalities in RARβ function have been linked to several diseases, including certain types of cancer. Understanding RARβ's mechanisms can provide insights into potential therapeutic targets for these conditions.