CCL4 and COVID-19: The panel of induced cytokines and chemokines in this acute lung injury model is rather similar to the panel of cytokines reported for COVID-19 patients, with cytokines/chemokines such as TNFα, IL-1, IL-6, IL-10, G-CSF, MIP-1α, MIP-1β , and MCP-1 correlating with critical stage in COVID-19 patients (1).