Belt-Gritter, B. van der

patient smoking lymphocytes subject control study serum ige lymphocyte smoker subset copd patients percentage group cd 8+ lymphocytes serum cd 19+ lymphocytes blood lymphocyte subsets control subjects airway smoking copd patients cigarette disease copd subjects non-smokers obstruction respir value t-cell lymphocyte cell subsets 19+ 5 min cigarette smoking lung function association ratio serum immunoglobulin e nonsmoking copd patients bronchitis cd 4+ lymphocytes function analysis bronchoalveolar lavage airflow obstruction airway obstruction relationship level cigarette smokers uchll pathogenesis venou bronchoalveolar iu ml development leukocyte venous blood airways obstruction disease patients nk cells hospital antibody t-cell subsets smoking copd subjects asthma inflammation 6 cells ml proportion cd 16+/cd lymphocytes pack-year f /m fev lavage anti-cd finding concentration airflow table number interaction methacholine asthmatic