Fertilized Human Egg, Prior to Division (image) University of North Carolina Health Care Caption This is a fertilized human egg, prior to division. Two nuclei (one from the egg and one from the sperm) can be seen in the center. Credit Photo courtesy of Stan Beyler, Ph.D. UNC A.R.T. laboratory. Usage Restrictions None 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.