4-D Scan of Fetus at 25 Weeks (IMAGE) Durham University Caption This is a sequence showing a fetus at 25 weeks reacting to touch. The fetus opens its mouth after touching it with its hand. Credit Dr. Nadja Reissland, Durham University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.