She switched to high power (x400). The nuclei—normally small, dark, and resting quietly at the base of each cell—were now large, hyperchromatic, and stratified. They elbowed each other for space, piling up three, four, five layers deep. Mitotic figures littered the field like car crashes at an intersection. One cell was caught mid-division, its chromosomes pulled toward opposite poles in a frantic, futile attempt at immortality.

Case #24-1882. "Mr. Henderson, 58, ?malignancy, sigmoid colon." Three tiny buff-colored fragments, each no bigger than a grain of rice, had arrived in formalin that morning. By now, they had been processed, embedded in molten paraffin, cut on a microtome into ribbons 3 microns thin, floated onto a warm water bath, scooped up by a gloved hand, and stained with hematoxylin and eosin. The result lay before her: a delicate mosaic of pink and purple.

Alisha reached for her dictaphone. She would tell the story plainly: "Received in formalin, labeled 'sigmoid colon,' are three fragments of tan-pink tissue measuring up to 0.4 cm. Microscopic examination demonstrates an infiltrative adenocarcinoma..."