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Teaching Old Cells New Tricks

Edinburgh University's Ian Wilmut, who cloned Dolly the sheep, is giving up his old cloning methods for a new one developed by Shinya Yamanaka at Kyoto University, reports the BBC. Yamanaka's method genetically modifies adult cells, such as skin cells, to make them more like stem cells. "The work which was described from Japan of using a technique to change cells from a patient directly into stem cells without making an embryo has got so much more potential," Wilmut said to the BBC.

The Scan

Tens of Millions Saved

The Associated Press writes that vaccines against COVID-19 saved an estimated 20 million lives in their first year.

Supersized Bacterium

NPR reports that researchers have found and characterized a bacterium that is visible to the naked eye.

Also Subvariants

Moderna says its bivalent SARS-CoV-2 vaccine leads to a strong immune response against Omicron subvariants, the Wall Street Journal reports.

Science Papers Present Gene-Edited Mouse Models of Liver Cancer, Hürthle Cell Carcinoma Analysis

In Science this week: a collection of mouse models of primary liver cancer, and more.