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The New Question: What to Do with Those Rescued Embryos?

A news article reported that scientists at Advanced Cell Technology have developed the first human embryonic stem cell line without destroying the original embryo. The company took a single cell from each of three embryos and then refroze them, leaving the embryos unharmed. Considering US President Bush's recent veto of more federal funding for stem cell research, this technique might be the answer to a looming morality question.

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.