To treat cancer most effectively, scientists need to understand not only the tumor itself, but also the environment around it. Riley Larkin, a graduate student in the Intramural Research Program at the National Institutes of Health, takes pictures of the immune cells surrounding tumors in the hopes that his findings will lead to ways to inhibit the cells that protect tumors and activate the ones that combat cancer. To learn more about the research being done in Riley's lab, visit https://ccr.cancer.gov/staff-directory/nyall-r-london Interested in finding out for yourself what it's like to do research at NIH? Check out our training opportunities to learn about the IRP's programs for students, recent graduates, and postdoctoral fellows: https://irp.nih.gov/research-training/training-opportunities The SciBites video shorts are produced by the https://www.youtube.com/channel/UCk4l5fGbJmFhN3QJVgvwa9w. Check out their YouTube channel and visit their website at https://irp.nih.gov/ to learn more about the NIH IRP.