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. 2021 May 28;12:653045. doi: 10.3389/fphys.2021.653045

FIGURE 4.

FIGURE 4

Altered Furin levels amongst COVID-19 patients. Blood serum from healthy (CoV–), COVID-19 positive (CoV+), and COVID-19 recovered (CoV Rec) subjects were obtained, and the Furin levels were quantitatively measured. The obtained results were plotted based on serum Furin levels in (A) healthy subjects vs. COVID-19 positive or COVID-19 recovered patients, (B) COVID-19 (positive and recovered) patients with or without a smoking history, and (C) COVID-19 (positive and recovered) patients based on their gender. Data are shown as mean ± SEM.