When did Horizon Season 25 Episode 12 air?
Horizon Season 25 Episode 12 aired on March 28, 1988.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Horizon looks at the progress of two heart disease patients at Montreal's Royal Victoria Hospital in Britain.
Direct answers for episode-level questions and details.
Horizon Season 25 Episode 12 aired on March 28, 1988.
This episode runs for approximately 60 minutes.
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