
Keywords: الکتروفورز ژل درجه حرارت; AECOPD; acute exacerbation of COPD; BAL; bronchoalveolar lavage; COPD; chronic obstructive pulmonary disease; DGGE; denaturing gradient gel electrophoresis; DNA; deoxyribonucleic acid; GI; gastrointestinal; NIH; National Institutes of Health; OTU; operati