5346
When stably expressed in transfected rat basophilic leukemia ( RBL - 2H3 ) cells , mFpr1 was readily activated by N - formylated peptides derived from Listeria monocytogenes ( fMIVTLF ) , Staphylococcus aureus ( fMIFL ) , and mitochondria ( fMMYALF ) .
 Chemical: N
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: N