English: Wound Healing Simulation for Patient Case P-4 : Cell Density. The volume rendering represents the (normalised dimensionless) cell density, η/η0, in the wounded region. At the early stages of the simulation—similarly to S2 Video—cells (i.e. fibroblasts) are migrating and proliferating towards the wound, while mitosis of cells (e.g. myofibroblasts, etc.) is also supported by the newly formed vascular network in this region. Evidently, one month after BCT, an established extracellular matrix is formed, tissue granulation nearly completes and the breast tissue start to remodel and mature, hence, the decreasing rate of deformation at the operated breast. For explanation of the two-dimensional plot, see the description in S1 Video.