contractions of the pulmonary artery ( mean maximum tension 66.9 +/- 13.0 mg , n = 10 ) required an increase in baseline tone of the preparation followed by exposure to anoxia ( mean bath po2 o +/- 3 mm hg ) , whereas contractions of the pulmonary vein ( mean maximum tension 75.2 +/- 13.3 mg , n = 10 ) could be elicited in response to hypoxia alone ( mean bath po2 40 +/- 4 mm hg ) .
C0003130
anoxia
C0242184
hypoxia