Figure 1.

Morphologic characterization of E18.5 control and transgenic lungs. A) H&E staining of control (left panel) and transgenic (right panel) lungs. B) Micrographs of control (left panel) and transgenic (right panel) lungs costained with anti-PDPN (red) and anti-proSFTPC (green). C) Micrographs of E16.5 (left panels) and E18.5 (right panels) control and transgenic lungs stained with anti-Sox9 (green). In these panels, the red and yellow colors appear as a result of autofluorescence of red blood cells. Blue staining, DAPI. Scale bars, 25 μM.