Agent-based model of heterogeneous T cell activation in vitro (supplementary material)

We combine modelling and in vitro measurement of T-cell properties at the level of individual cells. Two types of heterogeneity are explicitly simulated: cell-surface marker expression that is time-dependent and varies from cell to cell, and spatial heterogeneity that arises from local influences such as the proximity of IL-2-producing cells. In vitro, the kinetics of the activation of cohorts of CD4+ T cells from 4-6 week-old BALB/c mice was studied, under stimulus with soluble or plate-bound anti-CD3, or a combination of PMA and ionomycin.