Overview of microarray results obtained from fetal mouse lungs. Gene expression levels were compared at both GD17 and GD18 in males versus females (17 f vs. 17 m and 18 f vs. 18 m) as well as in males versus flutamide-treated males (17 m vs. 17 flut and 18 m vs. 18 flut). The number of genes differentially expressed for each comparison appears in grey boxes. White boxes contain the number of differentially expressed genes shared by comparisons to which they are connected. Flut: flutamide treated males, m: males, f: females.