Macrophage (IMAGE) The Francis Crick Institute Caption This is an image of a macrophage labelled for the nucleus (blue), fused lysosomes and phagosomes (red) and TB bacteria (green). Credit Susanne Herbst, Francis Crick Institute 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.