  We use a sharp interface model for active cells to study the jamming
transition point and behavior near it by varying cell concentration, active
velocity and elasticity, including a binary mixture of soft and stiff cells. We
determine the jamming transition point, as well as behavior near the
transition,including the effective diffusion, and sixfold bond correlations.
Finally, we expand on previous studies by showing the Voronoi dimensionless
cell shape can be treated as an order parameter at any concentration.
