as part of the american medical research expedition to everest in 1981 , we measured hemoglobin concentration , red cell 2,3-diphosphoglycerate ( 2,3-dpg ) , po2 at which hemoglobin is 50 % saturated ( p50 ) , and acid-base status in expedition members at various altitudes .
C0014792
red cell
C0019046
hemoglobin