IL1B and Stroke: The serum levels of IL-1RA, IL-1β, IL-4, IL-5, IL-6, IL-7, IL-9, IL-10, IL-13, IL-15, EGF, G-CSF, Flt-3L, GM-CSF, and Fractalkine levels were significantly lower in the severe versus (vs.) the minor stroke group (Fig. 1).