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Lasers! No Sharks, Though ...

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A new study published in Science Translational Medicine shows that lasers could play a role in the treatment of cancer, reports New Scientist's Jessica Hamzelou. Lasers could be used to destroy lymphatic vessels that help the cancer spread itself around, therefore stopping cancer from spreading to other systems. Such photodynamic therapy treatments are already used on cancer patients to target tumors, but the University of Helsinki researchers who authored the study thought it could also be used to halt metastasis, Hamzelou says. The team conducted its experiments on mice and researchers are now working on ways to adapt the study to human subjects.

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.