The cDNA was amplified, labeled, and hybridized to 60 K Agilent 60-mer oligo microarrays following the manufacturer's instructions. The Low Input Quick Amp Labeling Kit was used as the labeling reagent, with SurePrint G3 Human Gene Expression Microarray 8×60K as the microarray. All hybridized microarray slides were scanned with an Agilent scanner. Both the relative hybridization intensities and background hybridization values were calculated using Agilent Feature Extraction Software (9.5.1.1).