At Woollahra Dental Practice we would like to share this video about findings from Courtney Griffins after working as a geneticist and experiencing giving birth to identical twins. Epigenetics impact our lives and each one of our body cells. This talk was given at a local TEDx event, produced independently of the TED conferences. Because we want to understand what genes are required for blood vessel development, Courtney Griffin studies certain enzymes that help turn genes on and off. These enzymes are specifically involved in relaxing DNA that is normally tightly coiled up in our cells.