In CRSwNP samples, IL-33 had a mean tissue concentration of 210.0 pg/7 μg total protein (±8.327, n = 25) and in COVID-19 samples 52.77 pg/7 μg total protein (± 6.869, n = 12) (Figure 9). The gene discussed is IL33; the disease is chronic rhinosinusitis with nasal polyps.