CXCL10 and COVID-19: To understand whether the combination of the pro-inflammatory cytokines IL-6, IL-8 and IP-10 together with the EPs isolated from HC and COVID-19 patients could impact the cytokine secretion ability of ILC2, we isolated and expanded human ILC2 from HC in vitro and stimulated them with IL-6, IL-8, IP-10 alone or in the presence of either HC-EPs or Co-19-EPs.