RNA was extracted from formalin fixed, paraffin embedded tissue blocks. All CRS cases were without nasal polyposis. Shown are means + SEM. For non-CRS (open bars), n = 3 but for SOAT1 analysis, where n = 4. For CRS (grey bars), n = 14. SOAT1: sterol O-acyltransferase 1; CRS: chronic rhinosinusitis; HBD: human beta defensin, RPLP0: ribosomal protein, large, P0.