two chemotactic factors , the small molecular weight fragment of the fifth component of complement c5a and the synthetic peptide formyl-methionyl-leucyl-phenylalanine ( f-met-leu-phe ) , were tested and found to decrease the fluorescence of cell-associated chlorotetracycline in a manner strongly suggesting stimulus-induced displacement of membrane calcium .
C0008013
chemotactic factors
C0027229
formyl-methionyl-leucyl-phenylalanine