Sarah Cullen was eyeing the impending end of her postdoctoral position and wondering what to do next. She had earned a PhD in microbiology and immunology at the University of Arkansas in Fayetteville in 2009, and was now studying the behaviour of breast-cancer cells. But she felt that it was time for a change: she knew that postdocs are jammed into the scientific pipeline every year but fill only a tiny number of faculty research jobs

Download English article