U.S. scientists renew stem cell cloning efforts

With South Korean claims of a successful cloning program for embryonic stem cells in tatters, researchers in the U.S. are diving back into the field. UCSF scientists, for example, have relaunched an effort that had been halted five years ago. Therapeutic cloning is expressly permitted under California's Proposition 71, which was passed in 2004. And even though the state's $3 billion stem cell program is in limbo pending a final court decision, California researchers are expected to play a lead role in the field.

- read the report from the San Francisco Chronicle