“…Human neuroblastoma (SH-SY5Y) cells were grown in DMEM (Gibco, Life Technologies, Paisley, UK) supplemented with 10% FBS (PAA Laboratories GmbH, Pasching, Austria), 2% L-glutamine, and 5 U/ml penicillin/5 μ g/ml streptomycin (Gibco, Life Technologies, Paisley, UK) at 37°C, 5% CO 2 , at two different oxygen conditions (standard 21% O 2 and 5% O 2 , resp.) as described previously [ 23 ]. Simple home-made incubators for cultivation of cells at 5% O 2 were set up according to the protocol by Wright and Shay [ 27 ].…”