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. 2022 May 14;246:123537. doi: 10.1016/j.talanta.2022.123537

Fig. 4.

Fig. 4

The results obtained by PCA-DA analysis for classification of patients, healthy controls and cured participants. The results were provided after 4 min incubation of sensor and saliva samples. The sensor was fabricated at the optimum conditions shown in Fig. 2.