Monocyte and Macrophage (IMAGE) La Jolla Institute for Immunology Caption Selectively inactivating a molecular switch that turns on the gene Nr4a1 in monocytes but not macrophages leads to the loss of patrolling monocytes, which play an important role in suppressing lung metastasis in lung cancer. Credit La Jolla 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.