Group B Streptococcus (IMAGE) University of California - San Diego Caption Group B Streptococcus (green) binds Siglec-5 (red) on the surface of a human macrophages, shutting down their activity. DNA strain (blue) highlights nuclei of the human cells and bacteria. Credit Aaron Carlin and the UCSD Light Microscopy Facility 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.