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. 2011 Oct 12;6(10):e26247. doi: 10.1371/journal.pone.0026247

Figure 3. Cathepsin H expression in the lung.

Figure 3

(A) Expression of the lacZ reporter (blue staining) in Ctsh +/− mice as indication for Ctsh transcription in distinct alveolar cells, i.e. type II pneumocytes (arrows heads), and (B) in small airway bronchioles (indicated by *). (C–D) Histology and absent immunohistochemical detection of Ctsh in Ctsh −/− lungs. (E–F) Immunohistochemical detection of Ctsh in lungs of wild-type mice confirms the expression of Ctsh in distinct pneumocytes and bronchiolar epithelium (indicated by *). Scale bars are 50 µm.