HealthA gel that helps teeth regrow their own enamel
Researchers at the University of Nottingham have developed a gel that could help damaged tooth enamel grow back. Enamel is the hard outer layer of a tooth, and unlike bone it cannot repair itself once it is lost.
HealthViruses that hunt superbugs get their first global rulebook
Some viruses, called bacteriophages or phages, infect and destroy bacteria. Doctors have long hoped to use them against infections that no longer respond to antibiotics, but there has been no shared international standard for doing so.
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