Boar Sperm Mixed with Nanoparticles that Have Been Tagged with Green Dye for Identification (image) University of Oxford Share Print E-Mail Caption This is boar sperm mixed with mesoporous silica nanoparticles that have been tagged with fluorescent green dye for identification. These nanoparticles were developed by Oxford University researchers to investigate 'mystery' cases of infertility. They can be loaded with any compound to identify, diagnose or treat the causes of infertility. Credit Natalia Barkalina/Oxford University Usage Restrictions None Share Print E-Mail 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.