Hebrew University of Jerusalem Feb 27 2026 A new study suggests that pancreatic cancer may start preparing to "hide" from the immune system long before the disease becomes full-blown cancer. Researchers found that very early, precancerous cells in the pancreas don't spread randomly, they gather into specific clusters and create small "neighborhoods" inside the tissue. These early cell groups also seem to communicate directly with nearby immune cells in ways that may weaken the body's ability to