Quantification of yy2 , mbtps2 and yy1 in developing lung. Quantification of yy2, mbtps2 and yy1 transcripts levels in the lung during embryogenesis and adult stages (E14 to P30) by TaqMan real-time PCR. The expression data are normalized to β-actin. The pattern is similar to the heart analyzes. (n = 3 sets).