Expression profiling of gastric cancer samples by oligonucleotide microarray analysis reveals low degree of intra-tumor variability

Table 2 RNA and hybridization quality control parameters

Extraction/Tumor number	A260/280ratio	GAPDH CT	Present calls (%)	GAPDH 3’5’ ratio
A/1	2.18	15.86	52.5	1.08
B/1	2.18	15.7	52.3	1.26
A/2	2.09	15.8	49.2	0.89
B/2	2.07	15.6	54.4	1.19
A/3	2.1	15.2	53.5	1.09
B/3	2.1	15.2	52.5	1.08
A/4	2.07	15.5	48.8	0.99
B/4	2.08	15.2	49.8	0.96
A/5	2.15	16.07	51.7	1.95
B/5	2.24	16.15	54.7	1.46
A/6	2.19	16.08	42.9	1.58
B/6	2.13	16.2	45.9	1.34