Mr Sperling has put $US3.7 million into cloning research in the hope a copy can eventually be made of his aging long-haired dog, Missy.

• 斯珀林先生已经向克隆研究提供了370万美金的资助，他希望该项研究能够成功克隆出他的那只年迈的长毛狗密西。