7698
N - formyl peptide receptors ( FPRs ) are G protein - coupled receptors ( GPCRs ) that play critical roles in inflammatory reactions , and FPR - specific interactions can possibly be used to facilitate the resolution of pathological inflammatory reactions .
 Chemical: N - formyl
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 - formyl