
Keywords: BAL; bronchoalveolar lavage; CCL-2; chemokine [C-C motif] ligand 2; CCL-5; chemokine [C-C motif] ligand 5; C/EBP; CCAAT/enhancer binding protein; CO-2; cyclooxygenase-2; CRP; C-reactive protein; EC; elemental carbon; EEP; end expiratory pause; EIP; end in