Small bronchus (golden hamster)

Electron microscopy. Two ciliated cells with nuclei (1). Supranuclearly electron-dense lysosomes (2, lipofucsin) are present, the apical parts contain mitochondria (3) and cross-sections of cilia (4) and microvilli (5) are visible in the lumen (*). Two mucoid goblet cells with packed secretion granules (6) are interspersed in the epithelium. Subepithelially a fibroblast (7) with long extensions is located in between cross-sectioned thin collagen fibrils (8).