University College London May 2 2025 The 'cell of origin' of the second most common lung cancer and the way that it becomes dominant in the lung have been discovered, in a new study in mice and humans from researchers at UCL, the Wellcome Sanger Institute and the University of Cambridge. The study, published in Science , found that a population of basal cells found in the trachea (windpipe) outcompetes other cell types and becomes dominant, eventually invading and occupying large areas of the