Characterization of Fungal Colonization of Indwelling Esophagostomy Tubes

Figure 4

Scanning electron microscopy (SEM) images of polyurethane esophagostomy tubes. (a) The luminal surface of an unused polyurethane tube. The scale bar is equal to 20 μm and the original magnification is 1.42K. Photo credit: John Dunlap. (b) Thick bacterial and yeast-containing biofilm on the luminal surface of a tube exposed for 204 days in a dog (case 3). The visible tube surface has no evidence of pores or cracks. The scale bar is equal to 10 μm and the original magnification is 1.28K. Photo credit: John Dunlap. (c) Thin biofilm on the smooth luminal surface of a tube exposed for 204 days in a dog (case 3). The scale bar is equal to 1 μm and the original magnification is 12.22K. Photo credit: John Dunlap.

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