Yamanegi K, et al. - The intention of the authors was to analyze the involvement of delta annexin A3 (δANXA3) in the ribosomal protein S19 C-terminus-dependent inhibitory mechanism of the neutrophil C5a receptor (C5aR) through delta lactoferrin (δLf). It was determined that δANXA3 possibly participated in the antagonistic system of the neutrophil C5aR involving IAGQVAAANKKH and δLf. It was found to be probable that δANXA3 worked as an antagonist for the recycling C5aR on neutrophils during the resolution phase of acute inflammation.