Over-representation of vitamin D related genes in the developing lung transcriptome. A: Contingency tables of overlaps between VDRGS and 3 independent developing lung characteristic gene sets (DLCGS). B: Heat maps of 38 VDRGS-DLCGS genes in the C57BL6 mouse (left) and human (right) developing lung time series. The expression signal of each gene in each time series has been standardized to average 0, variance 1 across their respective time intervals. Four sentinel genes – BUB1, TOP2A, SFTPB and SFTPC – included for visual reference.