On a drizzly Monday afternoon, clinical pathologist Chin-Lee Wu sits down at an unoccupied desk a few feet away from one of the Broad’s bustling laboratories and gets ready to examine over 100 slides beneath a microscope. Chin-Lee is a surgical pathologist at Massachusetts General Hospital where he specializes in urological cancers, including prostate, kidney, and bladder cancers. For the last three years, he has also served as a consultant pathologist for the Broad, peering at prepared slides of cancer samples and making sense of the cellular disarray.