Possible inefficacy of polycythemia in tolerance to high altitude.
D000064:Acclimatization; D000531:Altitude; D000818:Animals; D001803:Blood Transfusion; D004906:Erythrocyte Count; D006400:Hematocrit; D000860:Hypoxia / Q000097:blood / Q000401:mortality; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D011086:Polycythemia