Teratoma Formation Risk Simulator (2D)

Stem-cell therapies built on pluripotent starting material carry a well-known safety trade-off: any cell that fails to fully differentiate keeps its capacity to divide indefinitely, and a handful left behind in a graft can seed a teratoma. This simulator models that race directly — a residual undifferentiated population grows by logistic proliferation inside a fixed niche capacity while the host immune system clears it at a competing rate — and renders the outcome as a pannable, zoomable 2D graft-bed dish where a growing red cell cluster either collapses back to zero or pushes out through the clinical detection ring, alongside a live growth-curve chart. Adjust the residual pluripotent fraction, the transplanted dose, and immune surveillance strength to see which regulatory and clinical levers actually change the odds.