COPD research. Participant signing permission forms for a study being carried out into chronic obstructive pulmonary disease (COPD). Participants had changes in various respiratory values and blood oxygen levels monitored,both while resting and while exercising. The exercise was carried out on exercise bikes (background) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Reeve, Antonia |
Bildgröße: | 5120 px × 3413 px |
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