The 2018 Nobel Prize in Chemistry has been awarded to three scientists for their discoveries in enzyme research.
Americans Frances Arnold and George P Smith will share the prize with Briton Gregory Winter, who is based at Cambridge University.
This year’s winners used a technique called directed evolution to create new enzymes – which accelerate chemical reactions in biology.
The award is worth nine million Swedish kronor (£770,686; $998,618).
Previous winners of the Nobel Prize in Chemistry
2017 – Jacques Dubochet, Joachim Frank and Richard Henderson were awarded the prize for improving images of biological molecules
2016 – Jean-Pierre Sauvage, Fraser Stoddart and Bernard Feringa shared the prize for the making machines on a molecular scale.
2015 – Discoveries in DNA repair earned Tomas Lindahl and Paul Modrich and Aziz Sancar the award.
2014 – Eric Betzig, Stefan Hell and William Moerner were awarded the prize for improving the resolution of optical microscopes.
2013 – Michael Levitt, Martin Karplus and Arieh Warshel shared the prize, for devising computer simulations of chemical processes.
2012 – Work that revealed how protein receptors pass signals between living cells and the environment won the prize for Robert Lefkowitz and Brian Kobilka.