KRT18 and COVID-19: The K18-hACE2 mouse model represents a model of severe COVID-19 that significantly recapitulates the lung pathology and inflammatory pathways seen in humans, and has been widely used for assessing new interventions and for studying SARS-CoV-2 biology (Yinda et al., 2021; Bishop et al., 2022; Dong et al., 2022; Da Silva Santos et al., 2023).