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M. J. Friedrich

JAMA. 2004;292:791-792.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Boston—Earlier this year, a South Korean research team led by Woo Suk Hwang, DVM, PhD, professor at Seoul National University College of Veterinary Medicine, announced the first successful cloning of an early-stage human embryo, called a blastocyst. The study demonstrated that nuclear transfer, a technique that had previously been carried out only in animals, could also work in humans. This technological advance is the first step toward creating human embryonic stem cells for use in treating a variety of diseases.

The reaction to the research was swift and heated. In an interview with the New York Times, Leon Kass, MD, the chairman of the President's Council on Bioethics, referred to the research as the beginning of a slippery slope. "Today, cloned blastocysts for research; tomorrow, cloned blastocysts for baby-making," Kass predicted.

A tissue-engineered renal unit created with cloned bovine embryonic stem cells produces a dilute . . . [Full Text of this Article]

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