3D, AIRWAY, ANATOMICAL, ANATOMY, ANTERIOR, ARTWORK, BACKGROUND, BIOLOGY, BLUE, BODY, BRONCHI, BRONCHIAL, BRONCHIOLE, CARINA, CGI, DIGITALLY-GENERATED, DIMENSIONAL, GRAPHIC, HEALTHY, HUMAN, ILLUSTRATION, INTERNAL, KAULITZKI, LUNGS, MALE, MAN, NO-ONE, NOBODY, NORMAL, ORGAN, PNEUMONIA, SEBASTIAN, THREE, TRACHEA, TRANSPARENT, TREE,