Millions of these robots would enter a human body, travel through the bloodstream and into the brain, where they would be parked next to brain cells.
(Millions of these robots; would enter; a human body, travel through the bloodstream and into the brain) (they; would be parked; next to brain cells; L:the brain)
Millions of these robots they
would enter would be parked
a human body, travel through the bloodstream and into the brain
next to brain cells L:the brain