Researchers at the University of Maryland at Baltimore succeeded in delivering nanoparticles into cancer cells that changed packaged DNA into circular DNA, a breakthrough that may have applications for oncology and gene-based therapy. The team demonstrated that "not only can a specific foreign enzyme--cyclic recombination (Cre) recombinase--be packaged into the capsid in vivo, but also that it is active within the capsid," said University of Maryland at Baltimore Dr. Jinny L. Liu. Article