asthma. respiratory disease. black lungs with red mark, and bronchi on white background

white wheezing vector tumor tuberculosis tightened thrombus system spot smooth silicosis sarcoidosis respiratory red radiology pulmonary production predisposition pollution pneumonia pathophysiology pathology obstructive normal narrowing muscles mucus monochrome medical mark lungs lesion inhaler inflammation infectious infarction immune imaging illness ill human histamine health genetic fibrosis emphysema embolism education disease diagnosis corticosteroids copd condition clot closeup circulation chronic cancer bronchus bronchodilators bronchoconstriction bronchitis bronchioles