Damaged Nucleolinus, Surf Clam Egg (Fertilized Lasered) (IMAGE) Marine Biological Laboratory Caption When the nucleolinus is damaged with an infrared laser, a fertilized Spisula egg cell (bottom right) does not proceed through cell division, and its cell division apparatus (blue and yellow) is malformed. The top left cell shows proper cell division in a fertilized egg with an undamaged nucleolinus. Credit Mary Anne Alliegro, Marine Biological Laboratory Usage Restrictions Please use with proper credit. 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.