Histologic changes in the trachea following tracheostomy.
D001485:Basement Membrane / Q000473:pathology; D003238:Connective Tissue; D004848:Epithelium; D006801:Humans; D008679:Metaplasia; D009092:Mucous Membrane; D010784:Photomicrography; D014140:Tracheotomy / Q000009:adverse effects*; D014802:Vitamin A Deficiency