Microscopic observation of the lung in vivo.
D000818:Animals; D004285:Dogs; D008168:Lung / Q000502:physiology*; D008853:Microscopy / Q000295:instrumentation*; D011652:Pulmonary Circulation / Q000187:drug effects / Q000502:physiology; D012119:Respiration / Q000502:physiology; D013903:Thoracic Surgery; D013909:Thorax / Q000601:surgery