Whole mount lung bud staining at E14.5 at 5X magnification. Lymphatic endothelial cells were localized with anti-LYVE-1-Cy3 (red). Endothelial cells were localized with anti-CD31-FITC (green). Normal lung buds (A and B) have linear, organized lymphatic endothelial cells with homogeneous distribution throughout the lung bud. N/B+CDH lung buds (C and D) are hypoplastic, and lymphatic endothelial cells are disorganized, nonlinear, with heterogeneous distribution throughout the lung bud. N/B-CDH lung buds (E and F) have left lung hypoplasia, but less severe than that seen in N/B+CDH. Lymphatics in N/B-CDH lung buds are more organized and linear than in N/B+CDH lung buds.