Chromosomes with DNA damage (IMAGE) University of Oregon Caption 3D modeling of developing sperm unveils sites of heat-induced DNA damage. Chromosomes are depicted in grey. Sites of DNA damage are seen in yellow/red foci. Numerous sites of DNA damage are present on each heat-shocked spermatocyte nucleus. Image taken with a DeltaVision Ultra High Resolution widefield microscope. 3D modeling was done with Imaris Microscopy Image Analysis software by Bitplane. Credit Image by Nicole Kurhanewicz Usage Restrictions Use 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.