Representative image of tumor cells transduced with GCaMP6 (Left). Yellow arrows (mesenchymal cells), red arrows (epithelial cells), scale bar = 50μm. GCaMP6 mean fluorescent intensity (MFI) in ECADHIGH or ECADLOW cells cultured in indicated medium (0 Ca2+ or 2 Ca2+) for 1h (Right). Representative of 3 independent murine PDA cell lines run in triplicate. Statistical analysis by Student's unpaired t-test (*, p<0.05; non-significant (NS); ±SD). 