Fantastic Voyage II:

One Soviet scientist, Pyotor Leonovich Shapirov, a pioneer of the miniaturization process, had spoken vaguely of a way to make it affordable. Unfortunately, he now lies in a coma, with his secrets apparently locked away forever.But Shapirov had been acquainted with an American scientist, Albert Jonas Morrison, who has his own peculiar theories regarding the brain's processing and storage of creative thought. Shapirov had been greatly intrigued by Morrison's ideas, and it's this interest that led the Soviets to turn to Morrison for help.