“…In the current study, we determined the prevalence, symmetry, and interrater agreement of IFAC cell types in an adult population with non-diseased sinuses. To date, a few studies have documented the prevalence of FR cells using the IFAC in different populations with healthy sinuses [2,3,10,12,13]. The most frequently observed FR cell in our study was ANC, present in 88% of sides, consistent with previous literature quoting ANC incidence between 87-97%.…”