Additionally, clinical chemistry data of secreted proteins showed that tumor‐border slices, but not non‐tumor slices, produced known tumor‐associated markers, including CA15‐3, CA19‐9, CA72‐4, CA125, CEA, S100, ferritin, and IL‐6 (Figures 2C; Tables S3 and S4) [23, 24, 25, 26]. This evidence concerns the gene IL6 and neoplasm.