'''The machines that scan our brains are usually monstrous contraptions, locked away in high-end research centers. But smaller, cheaper technologies may soon enter the field, like an MRI scanner ...'
'''Scientists and engineers have used uniform magnetic fields to drive iron-bearing nanoparticles to metal stents in injured blood vessels, where the particles deliver a drug payload that successfully prevents blockages in those vessels. In this animal ...'
If an elderly but distinguished scientist says that something is
possible he is almost certainly right, but if he says that it is impossible
he is very probably wrong. - Arthur C. Clarke
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