Fig. 2From: Interactions between rat alveolar epithelial cells and bone marrow-derived mesenchymal stem cells: an in vitro co-culture modelThree-dimensional reconstruction of images of cultured primary AECs on a Transwell insert with (c, d) or without (a, b) co-culture of BMSCs in the bottom well (separated co-culture) on days 7 (a, c) and 21 (b, d). Red staining indicates expression of RAGE, yellow staining indicates ZO-1 expression, and green staining indicates expression of p180Back to article page