A team of researchers has successfully used ultrasound waves to speed up drug delivery to the gastrointestinal (GI) tract. The study was conducted by researchers from MIT and the Massachusetts General Hospital (MGH), and the resulting technique could significantly improve improve treatment for inflammatory GI diseases.
Currently, recipients of arm or leg transplants need to take
immunosuppressive drugs for the rest of their lives, in order to keep
the donated parts from being rejected. If we could grow our own
replacement limbs, however, that wouldn't be necessary. And while we do
already possess the progenitor cells needed to grow such parts, what's
been lacking is a method of assembling them into the form of the desired
limb. Now, however, scientists have created a shortcut of sorts –
they've stripped the cells from one rat's forelimb and replaced them
with live cells from another rat, creating a functioning limb that the
second rat's immune system won't reject.