Quantification of yy2 , mbtps2 and yy1 in developing neocortex. Quantitative expression analyses (TaqMan real-time PCR) of yy2, mbtps2 and yy1 transcripts in the neocortex during development and in adult mice (E14 to P60). The expression of yy2 reaches a minimum around day P5. Expression levels are normalized to β-actin. (n = 3 sets; * p < 0.05; ** p < 0.01; statistical significances refer to E14).