Getting a shot at the doctor's office may become less painful in the not-too-distant future.

MIT
researchers have engineered a device that delivers a tiny,
high-pressure jet of medicine through the skin without the use of a
hypodermic needle. The device can be programmed to deliver a range of
doses to various depths — an improvement over similar jet-injection
systems that are now commercially available.

Read more at MIT News: http://web.mit.edu/newsoffice/2012/needleless-injections-0524.html