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Fig. 3. Cell proliferation and apoptosis in Sftpc-NmycEGFP transgenic
lungs. Sections of wild-type (A,C,E) and transgenic (B,D,F) E18.5 lung after a
1-hour pulse in vivo with BrdU followed by immunohistochemistry (A,B), or
after staining with antibody to PHH3 (C,D) or cleaved caspase 3 (E,F). Note
much higher rate of cell proliferation in both mesenchyme and epithelium of
the transgenic lung, and the epithelial cells undergoing apoptosis
(arrowheads). Scale bars: 50 µm.