Before revision: We document the initial-density dependence of the growth rate achieved by Jurkat cell cultures in a standard growth medium with fixed carrying capacity. As the density N_0 of the inoculum varies over 4 orders of magnitude, three distinct growth regimes appear. At small N_0, the growth rate \lambda is roughly constant and displays small sample-to-sample variability.
After revision: Individual cells exhibit specific proliferative responses to changes in microenvironmental conditions. Whether such potential is constrained by the cell density throughout the growth rate \lambda is roughly constant and displays small sample-to-sample variability.