MCF10A cell lines were obtained from American Type Culture Collection (ATCC) and cultured in Dulbecco's modified Eagle medium/F12 (DMEM/F12) supplemented with 5% Horse Serum (Invitrogen), 10 μg/ml insulin, 100 ng/ml Cholera toxin (Sigma Aldrich), 20 ng/ml Epidermal Growth Factor, 1% Penicillin-Streptomycin (Cellgro), and 0.5 μg/ml Hydrocortisone. All cells were grown at 37°C in 5% CO2. They were recently authenticated (Russ et al., 2012 (link)) and checked for contamination.
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