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A thousand cuts

发布时间:2019-03-07 04:12:15来源:未知点击:

By Marina Chicurel in San Francisco, California SWALLOWING a pill or being given a shot may not be the best way to take medicine. American researchers have designed a more efficient and less painful alternative: a smart patch that uses an electric charge to drive drugs through tiny slits in the skin. The use of skin patches, such as the nicotine patch that helps people quit smoking, has been limited because they rely on passive diffusion to shuttle drugs across skin, which is thick and mostly impermeable. A few years ago, however,