An anonymous reader writes "Harvard bioengineers have perfected injecting us with a drug-filled sponge instead of just a liquid. It may seem strange to want to inject a piece of sponge into your body, but it does actually help solve a number of invasive problems. For example, sometimes it is necessary to have drugs released slowly into our bodies, and/or some kind of bio-scaffold is required to be positioned so that it can help support a damaged organ or to engineer new tissue. This new, injectable sponge is incredibly useful because not only can it be filled with drugs that then are slowly released, it also has a memory and can be collapsed down to a tiny fraction of its original size."
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