the study of external respiration and acid-base equilibrium of blood of 35 test subjects exposed to 49-day head-down ( -4 degrees ) tilting and of 6 test subjects exposed to 182-day head-down ( -4 degrees ) tilting demonstrated a trend for a decrease in the respiration rate , lung ventilation , oxygen consumption , and a relative increase in the exhalation time .
C0018941
blood
C0022885
test