Reverse transcription products were used without purification for real time PCR at equivalent of 0.5 ng/ml RNA in 384 well plates. Samples were used as biological triplicates and each one was additionally pipetted as a triplicate. Reaction volumes were 10 ml consisting of 5.02 ml SYBR Green (Power SYBR Green Master Mix #4367660 Applied Biosystems, Cheshire UK), 1.49 ml RT-PCR product at 0.5 ng/ml input RNA equivalent (0.75 ng/rxn) and 3.49 ml of 3 mM Forward and Reverse primer mix. 384 well plates were prepared with a liquid handling robot (Freedom EVOware Tecan Trading AG, Switzerland) and read for relative quantification with Applied Biosystems 7900HT Real-Time PCR System (Applied Biosystems, Cheshire UK). Primers (synthesized by Eurogentec Seraing, Belgium) for CHO cDNA were based on mouse code, which was aligned with rat and human code, preference was given to aligning sequences (Table 3) . Sequence specificity was determined via nBlast. b-actin was used as housekeeping gene [82] [83] [84] [85] [86] [87] [88] [89] for CHO as well as human cortex templates with the forward sequence: CCTTCAACACCCCAGCCATGTACG and the reverse sequence: CCTTCAACACCCCAGCCATGTACG.