FPR1 and gastric cancer: In this study, we first examined the expression patterns of FPRs in 6 GC cells and 6 fresh GC specimens and found that all GC cells and specimens expressed all the members of FPRs, but 5 of 6 GC cells and 5 of 6 GC specimens had much higher expression levels of FPR2 than FPR1 and FPR3.