The finalists of the Wellcome Image Awards showcase the best science-related imagery from the past year.
The winners will be announced on March 15 in London, but here are some good ones.
A bioluminescent Hawaiian bobtail squid. (Credit: Mark R Smith, Macroscopic Solutions)
Vessels of a pig eye. Peter M Maloca, OCTlab at the University of Basel and Moorfields Eye Hospital, London; Christian Schwaller; Ruslan Hlushchuk, University of Bern; Sébastien Barré
Surface of a Mouse Retina: Gabriel Luna, Neuroscience Research Institute, University of California, Santa Barbara
Unravelled DNA in a Human Lung Cell: Ezequiel Miron, University of Oxford
#breastcancer Twitter Connections: Eric Clarke, Richard Arnett and Jane Burns, Royal College of Surgeons in Ireland