Recent technological advances have allowed for such dramatic and amazing views of the inside of our bodies that watching the footage can feel like you're in a science fiction film or on an imaginary expedition.
In such a science fiction journey, the 1966 film "Fantastic Voyage," a group of scientists and their submarine were miniaturized so they could be injected into a body in order to eliminate an otherwise unreachable brain clot.
"I use clips from that movie when I lecture about these...
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