Figure 3. Confirmation of differentially expressed genes observed in microarray results. (A) Four genes (MFG-E8, MRPL3, TMP2, and STK) selected from array results were analyzed by Northern blot as described in Fig. 1. (B) Radioactive signals were quantified by PhosphorImager with IMAGEQUANT software (Molecular Dynamics). Human glyceraldehyde-3-phosphate dehydrogenase (GAPDH) cDNA probe was used as an internal control. Data are presented as mean ± standard deviation and expressed as ratios relative to GAPDH values (*p < 0.05, **p < 0.01, n = 3).