Nanobot Senescent-Cell Clearance Swarm

A block of 480 living cells slowly accumulates molecular damage, occasionally tipping individual cells into a senescent "zombie" state whose SASP signalling accelerates damage in their neighbours — the same bystander-effect biology behind cellular senescence and aging. A deployable swarm of repair nanobots patrols the tissue in real time, using a sensor-range seek behaviour to hunt down senescent cells and clear them before the burden spreads, while a tunable immune-clearance risk slowly thins the swarm itself, exactly the biocompatibility trade-off the source article raises for real nanomedicine. A parallel counterfactual control population run with the identical damage equation but no nanobots lets the live "healthspan gain" readout show, second by second, how much longer the protected tissue stays healthy.