The fibronectin (p < 0.0001) and the versican (p = 0.044) densities were increased in the COVID-19 cases compared to the non-COVID-19, whereas the decorin density was decreased in the COVID-19 cases compared to the non-COVID-19 (p = 0.033) (Figs. 1 and 2). Here, VCAN is linked to COVID-19.