Figure 3 | Scientific Reports

Figure 3

From: A proof of concept study for the differentiation of SARS-CoV-2, hCoV-NL63, and IAV-H1N1 in vitro cultures using ion mobility spectrometry

Figure 3

Three-step decision tree of day 3 measurements classifies SARS-CoV-2, human coronavirus NL63, and influenza A virus H1N1 correctly without misassignment. Group assignment was conducted from top to bottom. Every grey box shows an MCC-IMS chromatogram peak, which was used in the decision tree and the number (n) of measurements. Numbers on grey arrows indicate peak intensity in arbitrary units (a.u.) of the peak above. The thickness of the arrows pointing from one box to the next shows the relative number of measurements with the respective peak intensity. The height of colored bars indicates the number of measurements classified in the respective group. Colored bars indicate the samples of the respective virus group classified, with red representing SARS-CoV-2; green, hCoV-NL63; and blue, IAV-H1N1. Note that all columns consisting of only one color indicate no wrong assignment. The graphic was visualized with Affinity Designer 1.10 (https://affinity.serif.com/en-us/designer/).

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