healthy lungs and lungs with cancer or inflammation

lungs chronic obstructive pulmonary disease copd smoking darkened tissue inflamed smoker person cancer tumor malignant lung emphysema pneumonia human healthy vector poster isometric flat trachea bronchi inflammation alveoli respiratory system anatomy structure pink red airway contrast difference dark interstitial ild black medicine medical illness tuberculosis infection treatment asthma virus scan coronavirus fibrosis patient flu internal examination pain diagnosis organ