abstract blue lungs with red human bronchial tree and red target sign. lungs, bronchioles, trachea. healthcare medical

human medical bronchiolar pneumonia respiratory cancer internal organ bronchiole trachea bronchi alveoli lung tract bronchioles bronchus bronchial tube disease flu tree health polygon digital futuristic poly low surgery lobe breath smoke sign symbol shoot point target goal aim focus protect save protein antitrypsin bronchodilator osmotic agent corticosteroid antibiotic antiviral therapy