Current Perspectives in Mesenchymal Stromal Cell Therapies for Airway Tissue Defects

Figure 2

The specimen of bronchial mucosa obtained by human bronchoscopic biopsy 60 days after stem cell implantation showed a discrete coarctation induced by sample taking (left lower box); however it was possible to appreciate hyperplastic respiratory epithelium lying on a diffusely fibrotic lamina propria. Bands of smooth muscle fibers were reduced and replaced by fibroblasts.