Scientists have created "artificial embryos" using stem cells from mice, in what they believe is a world first. The University of Cambridge team used two types of stem cells and a 3D scaffold to create a structure closely resembling a natural mouse embryo.
The World Health Organization has drawn up a list of the drug-resistant bacteria that pose the biggest threat to human health. Top of the list are gram-negative bugs, such as E. coli, which can cause lethal bloodstream infections and pneumonia in frail hospital patients.
A blood test every four months could help women at high-risk of ovarian cancer find tumours early, say doctors. There is currently no screening programme for the disease, so high-risk women are advised to have their ovaries and fallopian tubes removed.
Eating loads of fruit and vegetables - 10 portions a day - may give us longer lives, say researchers. The study, by Imperial College London, calculated such eating habits could prevent 7.8 million premature deaths each year.