Tag along with the Whitehead Institute’s “Cells Over Time” series to explore key moments of cancer progression. First stop: Jaenisch Lab, where chimeras shed new light on the cellular origins of neuroblastoma. In collaboration with the Spranger Lab, the researchers investigate how newly formed cancer cells “trick” immune cells into not destroying them. Spranger Lab technologies are also being used in the Weinberg Lab to understand the changes that occur when breast cancer cells become metastatic and acclimate to far-flung homes. Of course, this whirlwind tour would not be complete without a visit to the Weissman Lab where researchers have adapted a lung cancer model developed by the Jacks Lab to analyze gene expression as tumors evolve. Together, these intrepid explorers are charting a way forward in cancer biology.