Researchers at the University of Toronto have developed an alternative theory to explain how nanoparticles enter and exit the tumours they are meant to treat. This new principle debunks a leading theory in cancer nanomedicine that has guided research for nearly four decades.
![Photo of Prof. Geoff Ozin's posing with students, staff, and co-workers. They are holding balloons and signs saying "Happy Birthday"](https://www.chemistry.utoronto.ca/sites/www.chemistry.utoronto.ca/files/styles/ne_3btn_widget/public/ozin%20bday_0.jpg?itok=DCdZyXgh "Photo of Prof. Geoff Ozin's posing with students, staff, and co-workers. They are holding balloons and signs saying "Happy Birthday"")
