Chemoattractant for eosinophils and basophils (, ). Acts as a ligand for C-C chemokine receptor CCR3 which triggers Ca(2+) mobilization in eosinophils ( ). Also acts as a ligand for CX3C chemokine receptor CX3CR1, inducing cell chemotaxis .
Subcellular locations: Secreted
Ubiquitously expressed at low levels in various tissues including heart and ovary.