I'm skeptical on a few points: - Several previous attempts have been made to develop minimally invasive systems that rely on magnetic fields to move devices wi

I'm skeptical on a few points: - Several previous attempts have been made to develop minimally invasive systems that rely on magnetic fields to move devices with several limitations. It turns out that this is considerably less reliable and precise than you might initially guess. - The article doesn't state exactly how the microrobot is delivered. If it is into the vascular system there are several challenges with guiding a device through vessels at the scale that they're talking about. There are also significant challenges with moving such a device between different tissue or vascular compartments. - The critical issue with treating gliomas is less the ability to get drugs into the tumor (this is achieve-able through various mechanisms which breack down the blood brain barrier) but more the fact that gliomas are infiltrative pathologies which can't be separated out from functional brain tissue. I feel like the investors have probably been duped by nice sounding speculation from people with limited knowledge of neuropathology and endovascular therapy.