

An atomic submarine is reduced to a size smaller than a single red blood cell, and is injected into a dying man. The crew struggles to save the man's life by locating and destroying a blood clot before the submarine returns to its original size.
This story was based on a screenplay by Harry Kleiner that was made into a movie in the 1960's.
This story was based on a screenplay by Harry Kleiner that was made into a movie in the 1960's.