
Keywords: گیرنده فاکتور فعال کننده پلاکت; Occupational disease; welding fumes; platelet-activating factor receptor; Streptococcus pneumoniae; pneumonia; bacterial adhesion and infection; BALF; Bronchoalveolar lavage fluid; CFU; Colony-forming units; IPD; Invasive pneumococcal disease; LDH; Lactat