tokens: The complement C3a anaphylatoxin receptor ( C3aR ) is a seven-transmembrane G protein coupled chemoattractant receptor that on binding the C3a peptide ligand mediates numerous cellular responses , including histamine release from mast cells . smooth muscle contraction , and the directed migration of eosinophils .
folded_tokens: the complement c3a anaphylatoxin receptor ( c3ar ) be a seven-transmembrane g protein couple chemoattractant receptor that on bind the c3a peptide ligand mediate numerous cellular response , include histamine release from mast cell . smooth muscle contraction , and the directed migration of eosinophil .