This is very interesting, and though like any "breakthrough" it is early days and there is much more testing and research trials to be done. However, at this point, it sounds very promising. Please watch and listen to the short clip on the link below. Dr. David Conrad is being interviewed by CTV.
This is a video link published Aug. 13, 2013 at this CTV News web site:
Dr. David Conrad: ".. We've developed a 'particle-based therapeutic', and we can introduce it intravenously to mice that have leukemia. We've observed that not only is the leukemia eradicated but it sets up an immune response so that relapse does not occur... we set up an 'immune memory' with this treatment."
Wow, this sounds revolutionary - a treatment to kill the cancer, and then even prevent a relapse. Let's hope that this study's finding will be repeated in more trials, so that there will one day be human trials, and similar successful results. Researchers are keeping the hope alive with this study, and the "serial T-Cell" treatment from two years ago in Pennsylvania, and New York labs.