Figure 2

Confirmation of expression profiles of 54 transcripts by quantitative RT-PCR (qRT-PCR). The column shows the correlation between two types of expression profiles of the 54 transcripts from GeneChip^® and qRT-PCR data. Among the 54 transcripts, the correlation coefficients (r-value) between the two type of expression profiles were more than 0.707 (P < 0.05) for 45 transcripts (grey and black columns), and for 40/45 transcripts, the r-values were more than 0.834 (P < 0.01, black columns) (the numbers in the X-axis represented the serial number (SN) of the corresponding transcripts in Additional file 1, and the detailed data in Additional file 1). Six examples of the two profile types are shown below the column, and the y-axis is the expression level from GeneChip^® (left) and qRT-PCR (right) (, expression profiles detected by GeneChip; , expression profiles by qRT-PCR).