Fig. 1.

Increased level of PTX3 in COVID-19 patients. Serum samples were considered for the measurement of ficolin and PTX3 by enzyme-linked immunosorbent assay (ELISA) kits. Both ICU and non-ICU groups had remarkably increased levels of PTX3 compared with healthy controls (A). These differences were also significant for CRP levels between groups (B). However, ficolin levels did not show any significant difference between the three groups (C). *p < 0.05, **p < 0.01, ***p < 0.001, and ****p < 0.0001