A different approach has been taken by Yoshinori Kuwabara at Juntendo University in Tokyo. His team has removed foetuses from goats and placed them in clear plastic tanks filled with amniotic fluid stabilised at body temperature.

• 东京顺天堂大学的桑原教授进行了另一项研究，他的研究是从羊的体内取出胚胎，然后放入装有保持体温的羊水液体里。