Figure 1 | Laboratory Investigation

Figure 1

From: Basal cells of the human airways acquire mesenchymal traits in idiopathic pulmonary fibrosis and in culture

Figure 1

Basal cell reactivity, hyperplasia and upregulation of EMT markers adjacent to fibroblastic foci. Epithelium adjacent to fibroblastic foci shows increased reactivity and mesenchymal phenotype. Sparse staining of CK14 is seen in control samples, whereas CK14 is strongly expressed in epithelium overlying fibroblastic foci. P63, a restricted transcription factor for basal cells is expressed in epithelial cells located both basally and in the top layer indicating formation of metaplasia in IPF samples. E-cadherin is abundant in epithelium both in control and IPF samples. In addition, E-cadherin is present in cells within the foci. N-cadherin is expressed in lower basal epithelial cells in IPF samples whereas control samples are negative. Vimentin is expressed in both epithelium and mesenchyme in IPF samples. Bar 100 μm.

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