Colo 205 cells (ATCC) were cultured in 5% CO2 at 37°C in DMEM/F12 with HEPES and L-glutamine (Gibco) supplemented with 10% FBS (Atlantic Biologicals). For activation assay, cells were collected by standard trypsinization and plated at 1.2 x 106 cells/well in a 12-well plate and allowed to recover overnight. Spent media was carefully removed and replaced with fresh media during assay.
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