When did Horizon Season 34 Episode 7 air?
Horizon Season 34 Episode 7 aired on April 17, 1997.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 34 · Episode 7
Turned On by Danger
Apr 17, 1997·1h
Horizon reports on a radical new theory by Professor Polly Matzinger about the human body's immune system.
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How long is Horizon Season 34 Episode 7?
This episode runs for approximately 60 minutes.
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