Sunday, January 25, 2009


US Scientists have developed a tiny sensor that can detect small amounts of cancer-causing toxins or trace the effectiveness of cancer drugs inside living cells.They made a very small nanosensor that can detect cancer causing molecules or important therapeutic drugs inside of a single living cell,which is much smaller than the living cell in our body.
Sensors are made up of thin filaments of carbon molecules known as carbon nanotubes.The sensors give off a fluorescent light that can be detected in the near-infrared light spectrum,as human tissues do not lightup in this spectrum nanotubes stand out.Light signal changes when the sensors interact with the DNA inside the cells.These changes can helps in identifying the specific molecule,as the sensors are coated in DNA they can be injected easily into the living cells says scientists.

Tuesday, January 13, 2009