Changes in blood biochemical parameters in tail-suspended rats.

There have been many studies on the effects of gravity on animals and humans. In particular, weightlessness and the time course of physiological shifts in space acclimation are the most significant problems in a space environment. In a laboratory setting, tail suspension in rats has been utilized for simulation of weightlessness. We therefore utilized this technique in order to study the influence of microgravity on blood constituents in rats. It was clarified that some blood biochemical parameters were effected for the duration of suspension exposure, and they are reported here.