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Have a Heart

For years, researchers have known that adult zebrafish, and other fish and amphibians, can regenerate their damaged hearts. The phenomenon, however, has never been seen in mammals — until now. Researchers at the University of Texas Southwestern Medical Center report in Science this week their discovery that newborn mammalian hearts can heal themselves, says The New York Times' Sindya Bhanoo. The researchers found that if they removed about 15 percent of a newborn mouse's heart within the first week of its life, the heart grew back, Bhanoo says. After that first week, the ability to regenerate tissue is lost and heart failure occurs if the heart is damaged, the researchers add in their study. The team is unsure whether cardiomyocytes or stem cells are contributing to the regeneration, but they are searching for the genes that regulate the process in the hopes of finding ways to treat heart disease, Bhanoo says.

The Scan

Vaccine Update Recommended

A US Food and Drug Administration panel recommends booster vaccines be updated to target Omicron, CNBC reports.

US to Make More Vaccines for Monkeypox Available

The US is to make nearly 300,000 vaccine doses available in the coming weeks to stem the spread of human monkeypox virus, according to NPR.

Sentence Appealed

The Associated Press reports that Swedish prosecutors are appealing the sentence given to a surgeon once lauded for transplanting synthetic tracheas but then convicted of causing bodily harm.

Genome Biology Papers on COVID-19 Effector Genes, Virtual ChIP-seq, scDART

In Genome Biology this week: proposed COVID-19 effector genes, method to predict transcription factor binding patterns, and more.