User:Hariharanbms

CANCER AND NANO-SHELLS Nano-shells are hollow silica spheres covered with gold. Antibodies are attached to their surfaces, enabling the shells to target certain cells, such as cancer cells. Infrared radiation are directed through tissue and onto the shells, causing the gold to super-heat and destroy tumor cells while leaving healthy one intact. Technicians can control the amount of heat with the thickness of the gold and the kind of laser. Nano-shells also be filled with drug-containing polymers. Heating them could cause the polymers to release a controlled amount of the drug.