LIF and COVID-19: Of the 14/143 measures that differed between the sexes, seven were greater in female COVID-19 patients including IFN-α2, CCL17, Fractalkine, CD4Temra, naïve CD8 T cells, T cells, and T cell numbers, whereas seven measures that were lower in female versus male patients included LIF, CCL5, EGF, Eotaxin, Eotaxin-3, IL-18, and cMono.