For 43 bronchiectasis patients, the mean ± standard deviation percentage of eosinophils, neutrophils, CD4+ T cells and CD8+ T cells was 8.3 ± 5.9, 9.8 ± 5.0, 33.1 ± 9.7, and 15.8 ± 7.5, respectively. The gene discussed is CD4; the disease is bronchiectasis.