For the millions of diabetics and other patients who need to self-inject drugs daily with painful needles, reliable skin patch devices-similar to the ones ex-smokers use to get their nicotine fix-would be a great relief. The trick is finding ways to push large-molecule drugs, like insulin and human growth hormone, through the skin's oily top layers. An Israeli company believes it has a promising solution: radio waves.

Select from the choices above to read the entire article.