From: Star Trek: The Original Series

Caption: Space Amoeba

Star Trek: The Original Series

Episode: TOS 048 - Immunity Syndrome

Origin: space. A giant single-celled creature which resembles an Earth amoeba but is magnified millions of times.

This space-roaming entity threatened to consume all life in the galaxy until it was confronted and stopped by the U.S.S. Enterprise NCC-1701.

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