Fig. 3
From: Estimating the viral loads of SARS-CoV-2 in the oral cavity when complicated with periapical lesions
Summarized estimation of viral infection loads in healthy pulp tissues versus periapical lesions. A In healthy pulp tissues, FAs (indicated in orange color) are existed in higher amounts, which in turn increased the expression of host receptors (indicated in blue color), leading to increased viral infection loads. B In periapical lesions, low level of FAs accompanied with lower expression of host receptors and hence reduces the viral infection load