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Guinea-Bissau suspends US-funded vaccine trial as African scientists question its motives

Guinea-Bissau will implement a universal birth-dose policy for the Hepatitis B vaccine in 2027.Credit: Enrique Lopez-Tapia/Nature Picture Library/AlamyPublic-health authorities in Guinea-Bissau say that they have suspended a controversial US-funded hepatitis B vaccine study that has raised questions about who has...

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Random heteropolymers as enzyme mimics

Breslow, R. Artificial enzymes. Science 218, 532–537 (1982).Article  ADS  PubMed  CAS  Google Scholar  DeGrado, W. F., Wasserman, Z. R. & Lear, J. D. Protein design, a minimalist approach. Science 243, 622–628 (1989).Article  ADS  PubMed  CAS  Google Scholar  Kuhlman, B. et...

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