SHH and congenital diaphragmatic hernia: There was a significant decrease of SHH in CDH compared to control lung (0.001291 ±  0.0005 in CDH versus 0.005543 ±  0.0007 in CTL; results expressed in 2-Δct; n = 3 and 4 respectively; p =  0.0085; Figure 6A).