PMC8588950_01
Gram staining of a sputum sample aspirated from the endotracheal tube of a 63-year-old woman with Corynebacterium ulcerans infection and airway obstruction on the first day of hospitalization. The image shows Gram-positive rods. Magnification, x1,000.
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Gram staining of a tracheal aspirate on admission showed Gram-positive rods (Fig. 1).
Membrane-like abnormal structure expectorated from the endotracheal tube of a 63-year-old woman with Corynebacterium ulcerans infection and airway obstruction.
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Tracheal aspirate revealed an abnormal membrane-like structure (Fig. 2). Laryngeal deposits and membranous structures retrieved from the endotracheal tube were identified as pseudomembranes (Fig. 2).