A quantification of C-C motif chemokine 11, also known as Eotaxin,
Eosinophil chemotactic protein and
Small-inducible cytokine A11.
 In response to the presence of allergens, this protein directly promotes the accumulation of eosinophils, a prominent feature of allergic inflammatory reactions. Binds to CCR3. The trait is CCL11 measurement (EFO_0005188, an Experimental Factor Ontology entry).