Quantitation of SARS-CoV-2 RNA-positive cells in lung sections.

Abstract

In situ hybridization (RNAScope) was used to detect viral RNA in lung sections. (A) For each animal, the number of positive cells was counted in approximately 20 fields of right caudal lung lobe. Lines indicate median values. There were no differences between both study groups (p = 0.89, Mann Whitney test). (B) Example of lung section of animal CCP-2, with the arrows indicating RNA-positive cells.</p