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Figure S2. Determination of the time needed for PTX to inhibit CCL19-induced T cell polarization. T cells were treated with 100 ng/ml PTX or suB for 10 min, washed, and further incubated for the indicated times. The percentage of suB-treated (blue squares) and PTX-treated (red squares) T cells polarized by 100 ng/ml CCL19 was automatically quantified using the morphometric analysis function of MetaMorph.