3d medical of a human lung in a close-up, showing pneumonia symptoms with inflamed alveoli.closeup image of a lungs

lungs pneumonia alveoli closeup pulmonary blue vibrant airways ventilation illustration breath background foreground inspiration respiration respiratory health inhalation beautiful contrast mucus medicine life detail visualization overlay view visual biology oxygen vital green xray lifestyle detailed beauty healthy tissue clarity environment 3d medical anatomy organs crosssection disease transparent internal healthcare human