The alveolus and the capillary.
Bigatello
Luca M
LM
George
Ed
E
Hurford
William E
WE
D006801:Humans; D000860:Hypoxia / Q000503:physiopathology*; D011175:Positive-Pressure Respiration; D011650:Pulmonary Alveoli / Q000098:blood supply*; D011659:Pulmonary Gas Exchange; D012128:Respiratory Distress Syndrome / Q000503:physiopathology*