Microbeam radiation therapy uses a lattice of kilo-voltage x-ray âmicro-beamletsâ. The beamlets are 100-300 microns apart (100 microns is roughly the width of a human hair) and each beamlet is 10-50 microns wide.
The National-Security-Law Expert Who Blocked Trump's Travel Ban The former federal prosecutor and deputy counsel to the Department of Homeland Security writes that the prohibition violates the Constitution.
See more of our top stories on Facebook >>. The Obama administration has steadily loosened bans on trade and travel to Cuba over the last year as part of a push to normalize relations with the former Cold War adversary before the president leaves office.