Stem cell expert Jerry Yang dies

The University of Connecticut says Xiangzhong "Jerry" Yang, one of the top cloning scientists in the world, has died in a Boston hospital after a long battle with cancer. He was 49.

The University of Connecticut says Xiangzhong "Jerry" Yang, one of the top cloning scientists in the world, has died in a Boston hospital after a long battle with cancer. He was 49.

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The Chinese-born scientist was an advocate for human embryonic stem cell research. His 1999 cloning of a Holstein cow brought the university to national prominence. Amy was the first cloned first animal in the United States.

Yang was from a village called Dongcun, about 480 kilometres south of Beijing.