Cell supernatants were removed after 48 h (M1) or 24 h (M2) and probed using a multiplex human cytokine/chemokine panel (Bio-Rad, Hercules, CA) according to manufacturer’s instructions. Data/statistical analysis were done as described [16]. Cells were detached with EDTA (20 mM in PBS), washed with PBS, incubated with fluorescently-labeled antibodies against: CCR7, HLA-DR, CD80, CD86, and CD40 (BD Bioscience) (M1) or CD23 (M2), and analyzed on a FACSCalibur (BD Biosciences) using CellQuest (BD Biosciences) and FlowJo (Tree Star) software. Greater than 2,000,000 events per sample were analyzed.
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