abstract blue human bronchial with red circle inside. lungs anatomy. lung disease, diagnosis, treatment, healthcare

human medical pneumonia respiratory cancer organ trachea bronchi alveoli lung tract bronchioles bronchus chronic obstructive disease bronchitis asthma tuberculosis cystic fibrosis acute sarcoidosis hypertension bronchiectasis embolism flu virus coronavirus distress syndrome syncytial adenovirus parainfluenza metapneumovirus rhinovirus enterovirus hantavirus measles genetic hereditary polygon digital poly low technology hi futuristic red circle