Engineers create biodegradable needles that penetrate skin and precisely deliver tuberculosis test

Each year, millions of people in the United States get a tuberculosis skin test to see if they have the infection that still affects one third of the world’s population. But the standard diagnostic test is difficult to give, because a hypodermic needle must be inserted at a precise angle…

Source: Engineers create biodegradable needles that penetrate skin and precisely deliver tuberculosis test