The Bangkok Post tells us about Mahidol University's research into a new drug-delivery system to treat brain cancer patients. Scientist Norased Na Songkhla said the system involves PLEC copolymers, a nanomaterial that releases chemotherapy directly into tumors without affecting the surrounding area. In lab tests, researchers used the system to successfully inject a chemotherapy drug called SN-38 directly into brain tumors in test rats, Norased said. Researchers said human trials are planned over the next two years. Story