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Figure 9 | Respiratory Research

Figure 9

From: Selective accumulation of langerhans-type dendritic cells in small airways of patients with COPD

Figure 9

Immunohistochemical staining for Activin-A in small airway of human lung (A). Detail of the airway epithelium (B). Isotype control staining is presented in (C) and (D). Activin-A is strongly expressed in the airway epithelium and smooth muscle layer. The mononuclear cell infiltrate also expresses Activin-A. A mild expression is also observed the connective tissue of the lamina propria and adventitia.

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