In a novel cell collider chamber, scientists at the Ludwig-Maximilians-Universitaet (LMU) in Munich and the Vrije Universiteit (VU) in Amsterdam have inferred an equation for cellular motion in the event of collisions in pairwise interactions. The study shows while noncancerous cellular interaction are characterized by repulsion and friction, cancerous cellular interactions are characterized by attraction and anti-friction, promoting the predominant sliding behavior observed in these cells.