 Because of its interaction with lipoxin A4, FPR2 is also commonly named the ALX/FPR2 or just ALX receptor.The FPR2 receptor is expressed on human neutrophils, eosinophils, monocytes, macrophages, T cells, synovial fibroblasts, and intestinal and airway epithelium.Many oligopeptides that possess an N-Formylmethionine "N"-terminal residue such as the prototypical tripeptide N-Formylmethionine-leucyl-phenylalanine (i.e.