Man's future in space.
D001810:Blood Volume; D004912:Erythrocytes; D006801:Humans; D007022:Hypotension; D010100:Oxygen / Q000009:adverse effects; D011188:Potassium; D013026:Space Flight; D013997:Time Factors; D014893:Weightlessness
D011188:Potassium; D010100:Oxygen