Cells don’t always behave as individuals.
In sheets of epithelial cells — the tightly connected cells that line and cover much of the body — researchers have observed waves of contraction and expansion spreading through the group, a little like the stop-start compression that travels backwards through a traffic jam.
The cells are not passive: each is generating its own forces, yet neighbouring cells can fall into synchrony. In this study, that synchrony persisted longer in more malignant breast-cancer cell lines. It’s a good example of a property that only becomes visible when you stop looking at the cell and start looking at the collective.
https://phys.org/news/2026-08-cells-pulse-malignant-longest.html
https://phys.org/news/2026-08-cells-pulse-malignant-longest.html
