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Horizon

BBC TwoDocumentary · 62 seasons

7.5TMDB

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Season 34

Questions

Where can I watch Horizon?

Horizon streams on PBS.

How many episodes are in Season 34?

Season 34 has 15 episodes.

Episode roomHorizon S34 E7

Horizon · Season 34 · Episode 7

Turned On by Danger

Thursday, April 17 · 60 min

Horizon reports on a radical new theory by Professor Polly Matzinger about the human body's immune system.

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