The geometric mean of ISCs (IgA + IgG + IgM) /106 PBMC in those with acute sinusitis was 8689 (95%CI 3952–17020), those with acute tonsillitis 9532 (5695–16554), and in healthy controls 1135 (887–1420) (Fig 2). The gene discussed is CD79A; the disease is acute tonsillitis.