Illustration of chronic obstructive pulmonary disease (COPD),a common lung disease where breathing is difficult. There are two main forms of COPD: Chronic bronchitis,whose symptoms include a long-term cough with mucus) (inset left) and emphysema (the gradual breakdown of the lungs) (inset right). Most people with COPD have a combination of both forms. COPD is caused by noxious particles or gas,most commonly from tobacco smoking,which triggers an abnormal inflammatory response in the lung | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Schroeder, Monica |
Bildgröße: | 4200 px × 4200 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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