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. 2021 Oct 18;10(10):1345. doi: 10.3390/pathogens10101345

Figure 3.

Figure 3

(a) SEM micrograph of a polyethylene tracheostomy tube (PE) showing K. pneumoniae bacterial biofilm on the outer surface. (b) SEM micrograph of a polyethylene tracheostomy tube (PE) showing K. pneumoniae bacterial biofilm on the inner surface. (c) SEM micrograph of a polyvinyl chloride tracheostomy tube (PVC) showing K. pneumoniae bacterial biofilm on the outer surface. (d) SEM micrograph of a polyvinyl chloride tracheostomy tube (PVC) showing K. pneumoniae bacterial biofilm on the inner surface.