Manalis Lab researchers have discovered that before cells divide, they take out the molecular trash. In a study appearing in eLife and funded by the MIT Center for Precision Cancer Medicine, the team detected a drop in the dry mass of cancer cells using a technique deploying the Manalis Lab’s signature suspended microchannel resonator. Further experimentation revealed an uptick in lysosomal exocytosis, a process where lysosomes—cell organelles that process cellular waste—jettison their contents. Because exocytosis plays a role in the development of resistance to some chemotherapies, the findings could inform new strategies for making cancer cells more susceptible to treatment.