1990 年 6 巻 2 号 p. 2_1-2_7
Japanese treefrogs (Hyla japonica), were sent to the space station MIR. Their behavior were observed under microgravity. After 8 days on orbit, all of the 6 treefrogs were recovered on ground. Readaptation of frogs to normal gravity, and biological effects of space flight were investigated.