well characterized chemotaxins , the complement split product c5a , leukotriene b4 ( ltb4 ) , platelet activating factor ( paf ) , and n-formyl-methionyl-leucyl-phenylalanine ( fmlp ) , were used as chemoattractants .
C0027229
n-formyl-methionyl-leucyl-phenylalanine
C0008013
chemoattractants