IF staining for mesenchymal structures. (A, B) IF for α-SMA (red) and GFP (green) in ActinGFP native lung (A) and ActinGFP TELu (B), scale bar 100 μm. (C, D) IF of CD31 (white) for endothelial cells, GFP (green), and α-SMA (red), in ActinGFP native lung (C) and ActinGFP TELu (D), scale bar 50 μm. (E, F) IF of Tuj (red) for ganglia and CC10 (green), in native lung (E) and TELu (F), scale bar 100 μm. Color images available online at www.liebertpub.com/tec