Thus, increased IL-5 production induces (hyper)eosinophilia (i.e., blood eosinophil count above 1.5 G/L and/or increased presence of eosinophils/eosinophil granule proteins in tissue), both by stimulating eosinophoiesis and by reducing peripheral apoptosis. Here, IL5 is linked to Increased total eosinophil count.