the affinity of the chemoattractant receptor for n-formyl-methionyl-leucyl-phenylalanine ( fmet-leu-phe ) on human polymorphonuclear leukocytes ( pmns ) is regulated by guanine nucleotides , and chemoattractants stimulate increased intracellular camp levels in pmns .
C0027229
formyl-methionyl-leucyl-phenylalanine
C0008013
chemoattractants