Molecular embryology of the lung: Then, now, and in the future.

Presents an overview of research work on the molecular embryology of the lung. Garnering of information on gain- versus loss-of-function phenotypes of specific genes and gene families; Analysis of embryonic, fetal, neonatal and adult lungs; Regulation of branching morphogenesis in respiratory organs in Drosophila and mammals; Coordinated transcriptional activation and repression.