{"type":"root","children":[{"type":"paragraph","children":[{"type":"text","value":"The androgen receptor (AR) is a type of nuclear receptor and DNA-binding transcription factor which is activated by binding of either of the androgenic hormones testosterone or dihydrotestosterone during the development and function of male reproductive organs, including the prostate and epididymis. The androgen receptor also plays a role in nonreproductive organs, such as muscle, hair follicles, and the brain."}]}]}