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. 2014 Sep 2;9(9):e106445. doi: 10.1371/journal.pone.0106445

Figure 3. Microbial contamination of the surface of the tablet and of the outside of the used plastic bags.

Figure 3

Logarithmic presentation of the mean microbial contamination (colony forming units, CFUs) of the surface of the tablet computer before the initial and after the final use of each day and of the outside of the plastic bags of each day. Mean values ± standard deviations are shown. Samples were taken from three defined regions of interest (ROIs; ROI A  =  central touchscreen, ROI B  =  home button and its adjacent area, ROI C  =  upper central backside).