Horizon reports on a radical new theory by Professor Polly Matzinger about the human body's immune system.
| Title | Turned On by Danger |
|---|---|
| Genres | Documentary |
| Release Date | 1997-04-17 |
| Episode Runtime | 01 Hours 00 Minutes |
| Season Number | 34 |
| Episode Number | 7 |
| Production Companies |
No cast information available.
