Prevedel Final (IMAGE) European Molecular Biology Laboratory Caption The advanced imaging approach could enable scientists to observe glioblastoma tumour cells within their microenvironment in the white matter – a capability currently lacking and crucial to understanding how tumour cells invade the densely myelinated (insulated) fibre ‘lanes’ of that corpus callosum superhighway, adapting and spreading throughout the brain. Credit Isabel Romero Calvo/EMBL Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.