The pleural interface.
D001826:Body Fluids / Q000502:physiology; D003964:Diaphragm / Q000502:physiology*; D006801:Humans; D008153:Lubrication; D008954:Models, Biological; D009995:Osmosis; D010313:Partial Pressure; D010994:Pleura / Q000502:physiology*; D013909:Thorax / Q000502:physiology*; D014939:Work of Breathing