Fig. 2From: Differentiation of respiratory epithelium in a 3-dimensional co-culture with fibroblasts embedded in fibrin gelHigher magnification of PAS staining. a-d Detail of Fig. 1 in higher magnification of cells seeded onto pure fibrin gel on day 7 (a), 14 (b), 21 (c) and 33 (d). e-h Detail of Fig. 1 in higher magnification of respiratory epithelial cells grown on fibrin gel with embedded fibroblasts on day 7 (e), 14 (f), 21 (g) and 33 (h). Scale: 20 μmBack to article page