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A sign warns people of measles

2019 saw the tragic and unnecessary return of measles in the US

18 December 2019

Once deemed a problem of the past in rich nations, the deadly infection has made a huge comeback, reports Chelsea Whyte
DNA origami

Tiny machines made of DNA origami may make antibiotics work better

16 December 2019

Miniature devices made from intricately folded DNA strings can boost the potency of antibacterial chemicals by bringing individual molecules into direct contact with the microbes

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