to determine whether altitude exposure increases lung vascular permeability , we exposed rats to a simulated altitude of approximately 14,500 feet ( barometric pressure [ pb ] 450 torr ) and measured the pulmonary transvascular escape of radiolabeled 125i-albumin corrected for lung blood content with 51cr-tagged red blood cells ( protein leak index = pli ) .
C0001924
albumin
C0033684
protein