When a pulse of light is sent into the tumor using fiber optic cable that is threaded into a tumor using a biopsyneedle, the molecule absorbs the light energy, converts it electrical energy that then causes tumor cells to self destruct.
Dr Frauscher said a course of antibiotics would take care of any infections, but a needlebiopsy or surgery might be required to rule out cancer or to alleviate pain.
Up until earlier this year Mr Bull was assessed and diagnosed by biopsy, using a large needle pushed through the ribs, which would often have to be repeated for accuracy.
Later that evening I had a biopsy, where they stuck an endoscope down my throat, through my stomach and into my intestines, put a needle into my pancreas and got a few cells from the tumor.