neutrophilic granulocytes ( pmn ) are attracted to sites of inflammation by chemotactic factors , the most potent of which are the complement split product c5a , the leukotriene b4 and the bacterial chemotactic factor-related tripeptide formyl-methionyl-leucyl-phenylalanine ( fmlp ) .
C0008013
chemotactic factor
C0027229
formyl-methionyl-leucyl-phenylalanine