When cancer is confined to one spot in the body, doctors can often treat it with surgery or other therapies. Much of the mortality associated with cancer, however, is due to its tendency to metastasize, sending out seeds of itself that may take root throughout the body. The exact moment of metastasis is fleeting, lost in the millions of divisions that take place in a tumor. “These events are typically impossible to monitor in real time,” says Jonathan Weissman, MIT professor of biology and Whitehead Institute for Biomedical Research member. Now,…
