Every year, Wellcome Collection on Euston Road selects the most striking recent images from across science and medicine.
The winning image was taken by Robert Ludlow from UCL's Institute of Neurology during a surgical procedure to treat epilepsy.It was a close-up shot of the surface of living human's brain showing the arteries and veins that supply it with nutrients and oxygen.
The images include false-color and stained samples, which enhance their visibility. So while some of these colors might not exist in nature, they do a lot to spur curiosity and draw attention to the capabilities of modern medicine.
The following images are the 2012 winners, and include medical photography, as well as several kinds of high-tech microscopy.