Macrophages Infected with Mycobacterium Tuberculosis (image) University of Groningen Share Print E-Mail Caption Electron microscopy pictures showing the bacteria (*) producing 1-TbAd are surrounded by a swollen phagosome (big arrows, left picture) and bacteria not producing 1-TbAd are surrounded by tight phagosomes (small arrows, right picture). Credit Buter et al. / Nature Chemical Biology Usage Restrictions With credit 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.