RNA was isolated using the Isol-RNA lysis procedure (5 Prime, Hamburg, Germany). 25 μg of breast, kidney, liver and lung RNA of normal human samples (pools of five, one, three and four, respectively) were obtained from Agilent Technologies (Waldbronn, Germany). RNA was DNase (Fermentas GmbH, St.Leon-Rot, Germany) digested and then reversely transcribed [44 (link)]. RT-PCR was performed with primers: AATKRTF1: TGGCCTGGCTCACTGCAAGTACAG, AATKRTR1: CCCAGATGGTCACGCCCAGG, mAatkRTF1: GTGCTGAAGTGACCCCCTAC, mAatkRTR1: GGTCAGCGGTCACGAGATAG, ßACTFW: CCTTCCTTCCTGGGCATGGAGTC, ßACTRW: CGGAGTACTTGCGCTCAGGAGGA, GGCTCFRTFW: CAGGAAACGGAGGCTACGGTGG, GGCTCFRTRW: CCTCCTGCAGGCCTCCTTTGGA. Quantitative PCR (qRT-PCR) was performed in triplicate with PerfeCTa SYBR® Green (Quanta BioSciences, Gaithersburg, USA) using a Rotor-Gene 3000 (Corbett Research, Qiagen, Hilden, Germany).
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